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3155112031 = 82112972963
BaseRepresentation
bin1011110000001111…
…0011000001011111
322010212220022001011
42330003303001133
522430202041111
61241025000051
7141121003231
oct27403630137
98125808034
103155112031
111379a84405
12740783027
133b38831c6
1421d062251
15136ed3021
hexbc0f305f

3155112031 has 8 divisors (see below), whose sum is σ = 3162457584. Its totient is φ = 3147776640.

The previous prime is 3155112019. The next prime is 3155112041. The reversal of 3155112031 is 1302115513.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3155112031 - 213 = 3155103839 is a prime.

It is a super-2 number, since 2×31551120312 = 19909463856321889922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3155111993 and 3155112011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3155112041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1063356 + ... + 1066318.

It is an arithmetic number, because the mean of its divisors is an integer number (395307198).

Almost surely, 23155112031 is an apocalyptic number.

3155112031 is a deficient number, since it is larger than the sum of its proper divisors (7345553).

3155112031 is a wasteful number, since it uses less digits than its factorization.

3155112031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5081.

The product of its (nonzero) digits is 450, while the sum is 22.

The square root of 3155112031 is about 56170.3839313922. The cubic root of 3155112031 is about 1466.6897656888.

Adding to 3155112031 its reverse (1302115513), we get a palindrome (4457227544).

The spelling of 3155112031 in words is "three billion, one hundred fifty-five million, one hundred twelve thousand, thirty-one".

Divisors: 1 821 1297 2963 1064837 2432623 3843011 3155112031