31471253 has 12 divisors (see below), whose sum is σ = 34792800. Its totient is φ = 28444680.

The previous prime is 31471217. The next prime is 31471289. The reversal of 31471253 is 35217413.

It is an interprime number because it is at equal distance from previous prime (31471217) and next prime (31471289).

It is not a de Polignac number, because 31471253 - 2⁸ = 31470997 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31471213) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23426 + ... + 24732.

It is an arithmetic number, because the mean of its divisors is an integer number (2899400).

Almost surely, 2^31471253 is an apocalyptic number.

It is an amenable number.

31471253 is a deficient number, since it is larger than the sum of its proper divisors (3321547).

31471253 is a wasteful number, since it uses less digits than its factorization.

31471253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1528 (or 1517 counting only the distinct ones).

The product of its digits is 2520, while the sum is 26.

The square root of 31471253 is about 5609.9245092960. The cubic root of 31471253 is about 315.7218784791.

Adding to 31471253 its reverse (35217413), we get a palindrome (66688666).

The spelling of 31471253 in words is "thirty-one million, four hundred seventy-one thousand, two hundred fifty-three".