31231200323011 has 8 divisors (see below), whose sum is σ = 33633705594944. Its totient is φ = 28828710086400.

The previous prime is 31231200322969. The next prime is 31231200323093. The reversal of 31231200323011 is 11032300213213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-31231200323011 is a prime.

It is a super-2 number, since 2×31231200323011² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31231200323111) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 756211 + ... + 7939411.

It is an arithmetic number, because the mean of its divisors is an integer number (4204213199368).

Almost surely, 2^{31231200323011} is an apocalyptic number.

31231200323011 is a deficient number, since it is larger than the sum of its proper divisors (2402505271933).

31231200323011 is a wasteful number, since it uses less digits than its factorization.

31231200323011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7517661.

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

Adding to 31231200323011 its reverse (11032300213213), we get a palindrome (42263500536224).

The spelling of 31231200323011 in words is "thirty-one trillion, two hundred thirty-one billion, two hundred million, three hundred twenty-three thousand, eleven".