10261565231 has 4 divisors (see below), whose sum is σ = 10262889792. Its totient is φ = 10260240672.

The previous prime is 10261565227. The next prime is 10261565257. The reversal of 10261565231 is 13256516201.

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 10261565231 - 2² = 10261565227 is a prime.

It is a super-2 number, since 2×10261565231² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10261565221) 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, 650591 + ... + 666176.

It is an arithmetic number, because the mean of its divisors is an integer number (2565722448).

Almost surely, 2^10261565231 is an apocalyptic number.

10261565231 is a deficient number, since it is larger than the sum of its proper divisors (1324561).

10261565231 is an equidigital number, since it uses as much as digits as its factorization.

10261565231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1324560.

The product of its (nonzero) digits is 10800, while the sum is 32.

The spelling of 10261565231 in words is "ten billion, two hundred sixty-one million, five hundred sixty-five thousand, two hundred thirty-one".