31475152 has 40 divisors (see below), whose sum is σ = 62674560. Its totient is φ = 15308160.

The previous prime is 31475141. The next prime is 31475159. The reversal of 31475152 is 25157413.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 31475152.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31475159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 116874 + ... + 117142.

It is an arithmetic number, because the mean of its divisors is an integer number (1566864).

Almost surely, 2^31475152 is an apocalyptic number.

It is an amenable number.

31475152 is a deficient number, since it is larger than the sum of its proper divisors (31199408).

31475152 is a wasteful number, since it uses less digits than its factorization.

31475152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 451 (or 445 counting only the distinct ones).

The product of its digits is 4200, while the sum is 28.

The square root of 31475152 is about 5610.2720076659. The cubic root of 31475152 is about 315.7349162903.

It can be divided in two parts, 314 and 75152, that added together give a triangular number (75466 = T₃₈₈).

The spelling of 31475152 in words is "thirty-one million, four hundred seventy-five thousand, one hundred fifty-two".