31060040 has 64 divisors (see below), whose sum is σ = 77362560. Its totient is φ = 11128320.

The previous prime is 31060039. The next prime is 31060049. The reversal of 31060040 is 4006013.

It is a junction number, because it is equal to n+sod(n) for n = 31059997 and 31060024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31060049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31637 + ... + 32603.

It is an arithmetic number, because the mean of its divisors is an integer number (1208790).

Almost surely, 2^31060040 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31060040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38681280).

31060040 is an abundant number, since it is smaller than the sum of its proper divisors (46302520).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31060040 is a wasteful number, since it uses less digits than its factorization.

31060040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1062 (or 1058 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 31060040 is about 5573.1535058708. The cubic root of 31060040 is about 314.3407392834.

Adding to 31060040 its reverse (4006013), we get a palindrome (35066053).

The spelling of 31060040 in words is "thirty-one million, sixty thousand, forty".