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1102230031 = 7157461433
BaseRepresentation
bin100000110110010…
…1011001000001111
32211211001002100111
41001230223020033
54224132330111
6301212340451
736212541430
oct10154531017
92754032314
101102230031
115161a8811
12269174727
13147481a26
14a655d487
1566b76a21
hex41b2b20f

1102230031 has 4 divisors (see below), whose sum is σ = 1259691472. Its totient is φ = 944768592.

The previous prime is 1102230013. The next prime is 1102230043. The reversal of 1102230031 is 1300322011.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1300322011 = 4131715171.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-1102230031 is a prime.

It is a super-2 number, since 2×11022300312 = 2429822082476521922, 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 = 1102229993 and 1102230020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1102230011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 78730710 + ... + 78730723.

It is an arithmetic number, because the mean of its divisors is an integer number (314922868).

Almost surely, 21102230031 is an apocalyptic number.

1102230031 is a deficient number, since it is larger than the sum of its proper divisors (157461441).

1102230031 is an equidigital number, since it uses as much as digits as its factorization.

1102230031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157461440.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 1102230031 is about 33199.8498641184. The cubic root of 1102230031 is about 1032.9772253900.

Adding to 1102230031 its reverse (1300322011), we get a palindrome (2402552042).

The spelling of 1102230031 in words is "one billion, one hundred two million, two hundred thirty thousand, thirty-one".

Divisors: 1 7 157461433 1102230031