31450651123 has 4 divisors (see below), whose sum is σ = 32465188288. Its totient is φ = 30436113960.

The previous prime is 31450651109. The next prime is 31450651157. The reversal of 31450651123 is 32115605413.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31450651123 is a prime.

It is a super-2 number, since 2×31450651123² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31), and also a Moran number because the ratio is a prime number: 1014537133 = 31450651123 / (3 + 1 + 4 + 5 + 0 + 6 + 5 + 1 + 1 + 2 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31450651723) 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, 507268536 + ... + 507268597.

It is an arithmetic number, because the mean of its divisors is an integer number (8116297072).

Almost surely, 2^31450651123 is an apocalyptic number.

31450651123 is a deficient number, since it is larger than the sum of its proper divisors (1014537165).

31450651123 is a wasteful number, since it uses less digits than its factorization.

31450651123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1014537164.

The product of its (nonzero) digits is 10800, while the sum is 31.

The spelling of 31450651123 in words is "thirty-one billion, four hundred fifty million, six hundred fifty-one thousand, one hundred twenty-three".