31300002 has 24 divisors (see below), whose sum is σ = 69651036. Its totient is φ = 10151136.

The previous prime is 31299997. The next prime is 31300007. The reversal of 31300002 is 20000313.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (31299997) and next prime (31300007).

It can be written as a sum of positive squares in 2 ways, for example, as 29909961 + 1390041 = 5469^2 + 1179^2 .

It is a Harshad number since it is a multiple of its sum of digits (9).

It is not an unprimeable number, because it can be changed into a prime (31300007) 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, 22833 + ... + 24164.

Almost surely, 2^31300002 is an apocalyptic number.

31300002 is an abundant number, since it is smaller than the sum of its proper divisors (38351034).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31300002 is a wasteful number, since it uses less digits than its factorization.

31300002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47042 (or 47039 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 9.

The square root of 31300002 is about 5594.6404710222. The cubic root of 31300002 is about 315.1481691446.

Adding to 31300002 its reverse (20000313), we get a palindrome (51300315).

The spelling of 31300002 in words is "thirty-one million, three hundred thousand, two".