31040440533 has 24 divisors (see below), whose sum is σ = 46796418240. Its totient is φ = 19789323840.

The previous prime is 31040440531. The next prime is 31040440537. The reversal of 31040440533 is 33504404013.

It is not a de Polignac number, because 31040440533 - 2¹ = 31040440531 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31040440497 and 31040440506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31040440531) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1032393 + ... + 1062033.

It is an arithmetic number, because the mean of its divisors is an integer number (1949850760).

Almost surely, 2^31040440533 is an apocalyptic number.

It is an amenable number.

31040440533 is a deficient number, since it is larger than the sum of its proper divisors (15755977707).

31040440533 is a wasteful number, since it uses less digits than its factorization.

31040440533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34729 (or 34726 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 27.

Adding to 31040440533 its reverse (33504404013), we get a palindrome (64544844546).

The spelling of 31040440533 in words is "thirty-one billion, forty million, four hundred forty thousand, five hundred thirty-three".