31233122013 has 16 divisors (see below), whose sum is σ = 43864865280. Its totient is φ = 19713175344.

The previous prime is 31233121993. The next prime is 31233122023. The reversal of 31233122013 is 31022133213.

It is not a de Polignac number, because 31233122013 - 2⁶ = 31233121949 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31233122023) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 93081 + ... + 266702.

It is an arithmetic number, because the mean of its divisors is an integer number (2741554080).

Almost surely, 2^31233122013 is an apocalyptic number.

It is an amenable number.

31233122013 is a deficient number, since it is larger than the sum of its proper divisors (12631743267).

31233122013 is a wasteful number, since it uses less digits than its factorization.

31233122013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 361328.

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 31233122013 its reverse (31022133213), we get a palindrome (62255255226).

The spelling of 31233122013 in words is "thirty-one billion, two hundred thirty-three million, one hundred twenty-two thousand, thirteen".