31445511253 has 16 divisors (see below), whose sum is σ = 34637581440. Its totient is φ = 28369589184.

The previous prime is 31445511241. The next prime is 31445511403. The reversal of 31445511253 is 35211554413.

It is a cyclic number.

It is not a de Polignac number, because 31445511253 - 2⁵ = 31445511221 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 (31445511953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14200 + ... + 251182.

It is an arithmetic number, because the mean of its divisors is an integer number (2164848840).

Almost surely, 2^31445511253 is an apocalyptic number.

It is an amenable number.

31445511253 is a deficient number, since it is larger than the sum of its proper divisors (3192070187).

31445511253 is a wasteful number, since it uses less digits than its factorization.

31445511253 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237228.

The product of its digits is 36000, while the sum is 34.

The spelling of 31445511253 in words is "thirty-one billion, four hundred forty-five million, five hundred eleven thousand, two hundred fifty-three".