31343313002 has 4 divisors (see below), whose sum is σ = 47014969506. Its totient is φ = 15671656500.

The previous prime is 31343312999. The next prime is 31343313037. The reversal of 31343313002 is 20031334313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20031334313 = 67 ⋅298975139.

It can be written as a sum of positive squares in only one way, i.e., 19979539801 + 11363773201 = 141349^2 + 106601^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7835828249 + ... + 7835828252.

Almost surely, 2^31343313002 is an apocalyptic number.

31343313002 is a deficient number, since it is larger than the sum of its proper divisors (15671656504).

31343313002 is a wasteful number, since it uses less digits than its factorization.

31343313002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15671656503.

The product of its (nonzero) digits is 1944, while the sum is 23.

Adding to 31343313002 its reverse (20031334313), we get a palindrome (51374647315).

The spelling of 31343313002 in words is "thirty-one billion, three hundred forty-three million, three hundred thirteen thousand, two".