231552771331 has 16 divisors (see below), whose sum is σ = 280664322048. Its totient is φ = 186732295200.

The previous prime is 231552771311. The next prime is 231552771343. The reversal of 231552771331 is 133177255132.

It is a cyclic number.

It is not a de Polignac number, because 231552771331 - 2⁹ = 231552770819 is a prime.

It is a super-2 number, since 2×231552771331² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (231552771311) 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, 11778835 + ... + 11798476.

It is an arithmetic number, because the mean of its divisors is an integer number (17541520128).

Almost surely, 2^231552771331 is an apocalyptic number.

231552771331 is a deficient number, since it is larger than the sum of its proper divisors (49111550717).

231552771331 is a wasteful number, since it uses less digits than its factorization.

231552771331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23577402.

The product of its digits is 132300, while the sum is 40.

The spelling of 231552771331 in words is "two hundred thirty-one billion, five hundred fifty-two million, seven hundred seventy-one thousand, three hundred thirty-one".