31255253 has 4 divisors (see below), whose sum is σ = 31277760. Its totient is φ = 31232748.

The previous prime is 31255199. The next prime is 31255277. The reversal of 31255253 is 35255213.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31255253 - 2¹⁰ = 31254229 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 (31252253) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9023 + ... + 11996.

It is an arithmetic number, because the mean of its divisors is an integer number (7819440).

Almost surely, 2^31255253 is an apocalyptic number.

It is an amenable number.

31255253 is a deficient number, since it is larger than the sum of its proper divisors (22507).

31255253 is a wasteful number, since it uses less digits than its factorization.

31255253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22506.

The product of its digits is 4500, while the sum is 26.

The square root of 31255253 is about 5590.6397666099. The cubic root of 31255253 is about 314.9979104590.

The spelling of 31255253 in words is "thirty-one million, two hundred fifty-five thousand, two hundred fifty-three".