31423344421231 has 16 divisors (see below), whose sum is σ = 35950319641600. Its totient is φ = 26905856557248.

The previous prime is 31423344421169. The next prime is 31423344421241. The reversal of 31423344421231 is 13212444332413.

It is a cyclic number.

It is not a de Polignac number, because 31423344421231 - 2⁷ = 31423344421103 is a prime.

It is a super-2 number, since 2×31423344421231² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31423344421241) 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, 65532115 + ... + 66009883.

It is an arithmetic number, because the mean of its divisors is an integer number (2246894977600).

Almost surely, 2^{31423344421231} is an apocalyptic number.

31423344421231 is a deficient number, since it is larger than the sum of its proper divisors (4526975220369).

31423344421231 is a wasteful number, since it uses less digits than its factorization.

31423344421231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 487678.

The product of its digits is 165888, while the sum is 37.

Adding to 31423344421231 its reverse (13212444332413), we get a palindrome (44635788753644).

The spelling of 31423344421231 in words is "thirty-one trillion, four hundred twenty-three billion, three hundred forty-four million, four hundred twenty-one thousand, two hundred thirty-one".