31035143225 has 6 divisors (see below), whose sum is σ = 38483577630. Its totient is φ = 24828114560.

The previous prime is 31035143207. The next prime is 31035143263. The reversal of 31035143225 is 52234153013.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1601280256 + 29433862969 = 40016^2 + 171563^2 .

It is not a de Polignac number, because 31035143225 - 2³² = 26740175929 is a prime.

It is a super-2 number, since 2×31035143225² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 620702840 + ... + 620702889.

It is an arithmetic number, because the mean of its divisors is an integer number (6413929605).

Almost surely, 2^31035143225 is an apocalyptic number.

It is an amenable number.

31035143225 is a deficient number, since it is larger than the sum of its proper divisors (7448434405).

31035143225 is a wasteful number, since it uses less digits than its factorization.

31035143225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1241405739 (or 1241405734 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 29.

Adding to 31035143225 its reverse (52234153013), we get a palindrome (83269296238).

The spelling of 31035143225 in words is "thirty-one billion, thirty-five million, one hundred forty-three thousand, two hundred twenty-five".