10123531357 has 4 divisors (see below), whose sum is σ = 10124815420. Its totient is φ = 10122247296.

The previous prime is 10123531333. The next prime is 10123531373. The reversal of 10123531357 is 75313532101.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 933241401 + 9190289956 = 30549^2 + 95866^2 .

It is a cyclic number.

It is not a de Polignac number, because 10123531357 - 2²⁷ = 9989313629 is a prime.

It is a super-2 number, since 2×10123531357² (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 (10123531307) 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, 630132 + ... + 645997.

It is an arithmetic number, because the mean of its divisors is an integer number (2531203855).

Almost surely, 2^10123531357 is an apocalyptic number.

It is an amenable number.

10123531357 is a deficient number, since it is larger than the sum of its proper divisors (1284063).

10123531357 is an equidigital number, since it uses as much as digits as its factorization.

10123531357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1284062.

The product of its (nonzero) digits is 9450, while the sum is 31.

The spelling of 10123531357 in words is "ten billion, one hundred twenty-three million, five hundred thirty-one thousand, three hundred fifty-seven".