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2152133231 = 3758165763
BaseRepresentation
bin1000000001000110…
…1111001001101111
312112222121200210012
42000101233021233
513401421230411
6553315403435
7104221554623
oct20021571157
95488550705
102152133231
11a04906606
125008b357b
13283b42221
14165b7b183
15c8e1418b
hex8046f26f

2152133231 has 4 divisors (see below), whose sum is σ = 2210299032. Its totient is φ = 2093967432.

The previous prime is 2152133227. The next prime is 2152133233. The reversal of 2152133231 is 1323312512.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2152133231 - 22 = 2152133227 is a prime.

It is a super-2 number, since 2×21521332312 = 9263354887948998722, 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 = 2152133197 and 2152133206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2152133233) 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, 29082845 + ... + 29082918.

It is an arithmetic number, because the mean of its divisors is an integer number (552574758).

Almost surely, 22152133231 is an apocalyptic number.

2152133231 is a deficient number, since it is larger than the sum of its proper divisors (58165801).

2152133231 is an equidigital number, since it uses as much as digits as its factorization.

2152133231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58165800.

The product of its digits is 1080, while the sum is 23.

The square root of 2152133231 is about 46391.0899958171. The cubic root of 2152133231 is about 1291.0896050099.

Adding to 2152133231 its reverse (1323312512), we get a palindrome (3475445743).

The spelling of 2152133231 in words is "two billion, one hundred fifty-two million, one hundred thirty-three thousand, two hundred thirty-one".

Divisors: 1 37 58165763 2152133231