31417040 has 40 divisors (see below), whose sum is σ = 73284000. Its totient is φ = 12525696.

The previous prime is 31417031. The next prime is 31417069. The reversal of 31417040 is 4071413.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39527 + ... + 40313.

It is an arithmetic number, because the mean of its divisors is an integer number (1832100).

Almost surely, 2^31417040 is an apocalyptic number.

It is an amenable number.

31417040 is an abundant number, since it is smaller than the sum of its proper divisors (41866960).

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

31417040 is a wasteful number, since it uses less digits than its factorization.

31417040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1299 (or 1293 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 20.

The square root of 31417040 is about 5605.0905434257. The cubic root of 31417040 is about 315.5404847071.

Adding to 31417040 its reverse (4071413), we get a palindrome (35488453).

The spelling of 31417040 in words is "thirty-one million, four hundred seventeen thousand, forty".