31323046046639 has 4 divisors (see below), whose sum is σ = 32403151082760. Its totient is φ = 30242941010520.

The previous prime is 31323046046609. The next prime is 31323046046671. The reversal of 31323046046639 is 93664064032313.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31323046046639 is a prime.

It is a super-2 number, since 2×31323046046639² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31323046046609) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 540052518017 + ... + 540052518074.

It is an arithmetic number, because the mean of its divisors is an integer number (8100787770690).

Almost surely, 2^{31323046046639} is an apocalyptic number.

31323046046639 is a deficient number, since it is larger than the sum of its proper divisors (1080105036121).

31323046046639 is a wasteful number, since it uses less digits than its factorization.

31323046046639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080105036120.

The product of its (nonzero) digits is 5038848, while the sum is 50.

The spelling of 31323046046639 in words is "thirty-one trillion, three hundred twenty-three billion, forty-six million, forty-six thousand, six hundred thirty-nine".