31231300223011 has 12 divisors (see below), whose sum is σ = 36330820671600. Its totient is φ = 26769293421360.

The previous prime is 31231300223009. The next prime is 31231300223021. The reversal of 31231300223011 is 11032200313213.

It is not a de Polignac number, because 31231300223011 - 2¹ = 31231300223009 is a prime.

It is a super-2 number, since 2×31231300223011² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31231300223021) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1271236 + ... + 8004913.

It is an arithmetic number, because the mean of its divisors is an integer number (3027568389300).

Almost surely, 2^{31231300223011} is an apocalyptic number.

31231300223011 is a deficient number, since it is larger than the sum of its proper divisors (5099520448589).

31231300223011 is an equidigital number, since it uses as much as digits as its factorization.

31231300223011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9344874 (or 9344867 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 31231300223011 its reverse (11032200313213), we get a palindrome (42263500536224).

The spelling of 31231300223011 in words is "thirty-one trillion, two hundred thirty-one billion, three hundred million, two hundred twenty-three thousand, eleven".