31240323003431 has 8 divisors (see below), whose sum is σ = 31426216374864. Its totient is φ = 31054677327360.

The previous prime is 31240323003361. The next prime is 31240323003497. The reversal of 31240323003431 is 13430032304213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31240323003431 - 2²⁶ = 31240255894567 is a prime.

It is a super-2 number, since 2×31240323003431² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31240323003394 and 31240323003403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31240323000431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61670840 + ... + 62175341.

It is an arithmetic number, because the mean of its divisors is an integer number (3928277046858).

Almost surely, 2^{31240323003431} is an apocalyptic number.

31240323003431 is a deficient number, since it is larger than the sum of its proper divisors (185893371433).

31240323003431 is a wasteful number, since it uses less digits than its factorization.

31240323003431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123847681.

The product of its (nonzero) digits is 15552, while the sum is 29.

Adding to 31240323003431 its reverse (13430032304213), we get a palindrome (44670355307644).

The spelling of 31240323003431 in words is "thirty-one trillion, two hundred forty billion, three hundred twenty-three million, three thousand, four hundred thirty-one".