31073540431 has 16 divisors (see below), whose sum is σ = 32635100160. Its totient is φ = 29530163520.

The previous prime is 31073540413. The next prime is 31073540437. The reversal of 31073540431 is 13404537013.

It is a cyclic number.

It is not a de Polignac number, because 31073540431 - 2¹³ = 31073532239 is a prime.

It is a super-2 number, since 2×31073540431² (a number of 22 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 = 31073540393 and 31073540402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31073540437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2231950 + ... + 2245828.

It is an arithmetic number, because the mean of its divisors is an integer number (2039693760).

Almost surely, 2^31073540431 is an apocalyptic number.

31073540431 is a deficient number, since it is larger than the sum of its proper divisors (1561559729).

31073540431 is a wasteful number, since it uses less digits than its factorization.

31073540431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14526.

The product of its (nonzero) digits is 15120, while the sum is 31.

The spelling of 31073540431 in words is "thirty-one billion, seventy-three million, five hundred forty thousand, four hundred thirty-one".