31003201323 has 6 divisors (see below), whose sum is σ = 44782401924. Its totient is φ = 20668800876.

The previous prime is 31003201321. The next prime is 31003201337. The reversal of 31003201323 is 32310230013.

31003201323 is a `hidden beast` number, since 310 + 0 + 32 + 0 + 1 + 323 = 666.

It is not a de Polignac number, because 31003201323 - 2¹ = 31003201321 is a prime.

It is a super-2 number, since 2×31003201323² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31003201296 and 31003201305.

It is not an unprimeable number, because it can be changed into a prime (31003201321) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1722400065 + ... + 1722400082.

It is an arithmetic number, because the mean of its divisors is an integer number (7463733654).

Almost surely, 2^31003201323 is an apocalyptic number.

31003201323 is a deficient number, since it is larger than the sum of its proper divisors (13779200601).

31003201323 is a wasteful number, since it uses less digits than its factorization.

31003201323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3444800153 (or 3444800150 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 31003201323 its reverse (32310230013), we get a palindrome (63313431336).

The spelling of 31003201323 in words is "thirty-one billion, three million, two hundred one thousand, three hundred twenty-three".