31423142225 has 36 divisors (see below), whose sum is σ = 41224663536. Its totient is φ = 23754999840.

The previous prime is 31423142213. The next prime is 31423142237. The reversal of 31423142225 is 52224132413.

It is an interprime number because it is at equal distance from previous prime (31423142213) and next prime (31423142237).

It is not a de Polignac number, because 31423142225 - 2⁸ = 31423141969 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1083362 + ... + 1111988.

Almost surely, 2^31423142225 is an apocalyptic number.

It is an amenable number.

31423142225 is a deficient number, since it is larger than the sum of its proper divisors (9801521311).

31423142225 is a wasteful number, since it uses less digits than its factorization.

31423142225 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28766 (or 28738 counting only the distinct ones).

The product of its digits is 11520, while the sum is 29.

Adding to 31423142225 its reverse (52224132413), we get a palindrome (83647274638).

The spelling of 31423142225 in words is "thirty-one billion, four hundred twenty-three million, one hundred forty-two thousand, two hundred twenty-five".