31411040 has 48 divisors (see below), whose sum is σ = 75805632. Its totient is φ = 12294144.

The previous prime is 31411021. The next prime is 31411063. The reversal of 31411040 is 4011413.

It is a happy number.

It is a super-3 number, since 3×31411040³ (a number of 23 digits) contains 333 as substring.

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, 5432 + ... + 9608.

It is an arithmetic number, because the mean of its divisors is an integer number (1579284).

Almost surely, 2^31411040 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 31411040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37902816).

31411040 is an abundant number, since it is smaller than the sum of its proper divisors (44394592).

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

31411040 is a wasteful number, since it uses less digits than its factorization.

31411040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4239 (or 4231 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 31411040 is about 5604.5552901189. Note that the first 3 decimals coincide. The cubic root of 31411040 is about 315.5203962090.

Adding to 31411040 its reverse (4011413), we get a palindrome (35422453).

The spelling of 31411040 in words is "thirty-one million, four hundred eleven thousand, forty".