31013002 has 4 divisors (see below), whose sum is σ = 46519506. Its totient is φ = 15506500.

The previous prime is 31012973. The next prime is 31013023. The reversal of 31013002 is 20031013.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20031013 = 433 ⋅46261.

It can be written as a sum of positive squares in only one way, i.e., 17901361 + 13111641 = 4231^2 + 3621^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 31013002.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7753249 + ... + 7753252.

Almost surely, 2^31013002 is an apocalyptic number.

31013002 is a deficient number, since it is larger than the sum of its proper divisors (15506504).

31013002 is a wasteful number, since it uses less digits than its factorization.

31013002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15506503.

The product of its (nonzero) digits is 18, while the sum is 10.

The square root of 31013002 is about 5568.9318544942. The cubic root of 31013002 is about 314.1819776287.

Adding to 31013002 its reverse (20031013), we get a palindrome (51044015).

The spelling of 31013002 in words is "thirty-one million, thirteen thousand, two".