31396452 has 12 divisors (see below), whose sum is σ = 73258416. Its totient is φ = 10465480.

The previous prime is 31396451. The next prime is 31396457. The reversal of 31396452 is 25469313.

It is a tau number, because it is divible by the number of its divisors (12).

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (31396451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1308174 + ... + 1308197.

It is an arithmetic number, because the mean of its divisors is an integer number (6104868).

Almost surely, 2^31396452 is an apocalyptic number.

It is an amenable number.

31396452 is an abundant number, since it is smaller than the sum of its proper divisors (41861964).

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

31396452 is a wasteful number, since it uses less digits than its factorization.

31396452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2616378 (or 2616376 counting only the distinct ones).

The product of its digits is 19440, while the sum is 33.

The square root of 31396452 is about 5603.2536976296. The cubic root of 31396452 is about 315.4715437008.

It can be divided in two parts, 3139 and 6452, that added together give a triangular number (9591 = T₁₃₈).

The spelling of 31396452 in words is "thirty-one million, three hundred ninety-six thousand, four hundred fifty-two".