31114140 has 48 divisors (see below), whose sum is σ = 87363360. Its totient is φ = 8273920.

The previous prime is 31114099. The next prime is 31114157. The reversal of 31114140 is 4141113.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 38056 + ... + 38864.

It is an arithmetic number, because the mean of its divisors is an integer number (1820070).

Almost surely, 2^31114140 is an apocalyptic number.

31114140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31114140 is an abundant number, since it is smaller than the sum of its proper divisors (56249220).

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

31114140 is a wasteful number, since it uses less digits than its factorization.

31114140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1462 (or 1460 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 15.

The square root of 31114140 is about 5578.0050197181. The cubic root of 31114140 is about 314.5231383834.

Adding to 31114140 its reverse (4141113), we get a palindrome (35255253).

The spelling of 31114140 in words is "thirty-one million, one hundred fourteen thousand, one hundred forty".