31142364 has 24 divisors (see below), whose sum is σ = 79271808. Its totient is φ = 9437040.

The previous prime is 31142303. The next prime is 31142381. The reversal of 31142364 is 46324113.

It is a nude number because it is divisible by every one of its digits.

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, 117832 + ... + 118095.

It is an arithmetic number, because the mean of its divisors is an integer number (3302992).

Almost surely, 2^31142364 is an apocalyptic number.

It is an amenable number.

31142364 is an abundant number, since it is smaller than the sum of its proper divisors (48129444).

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

31142364 is a wasteful number, since it uses less digits than its factorization.

31142364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 235945 (or 235943 counting only the distinct ones).

The product of its digits is 1728, while the sum is 24.

The square root of 31142364 is about 5580.5343830139. The cubic root of 31142364 is about 314.6182121798.

Adding to 31142364 its reverse (46324113), we get a palindrome (77466477).

The spelling of 31142364 in words is "thirty-one million, one hundred forty-two thousand, three hundred sixty-four".