31423121324 has 12 divisors (see below), whose sum is σ = 62846242704. Its totient is φ = 13467051984.

The previous prime is 31423121321. The next prime is 31423121363. The reversal of 31423121324 is 42312132413.

31423121324 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 31423121293 and 31423121302.

It is not an unprimeable number, because it can be changed into a prime (31423121321) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 561127139 + ... + 561127194.

It is an arithmetic number, because the mean of its divisors is an integer number (5237186892).

Almost surely, 2^31423121324 is an apocalyptic number.

It is an amenable number.

31423121324 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31423121324 is a wasteful number, since it uses less digits than its factorization.

31423121324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122254344 (or 1122254342 counting only the distinct ones).

The product of its digits is 3456, while the sum is 26.

Adding to 31423121324 its reverse (42312132413), we get a palindrome (73735253737).

The spelling of 31423121324 in words is "thirty-one billion, four hundred twenty-three million, one hundred twenty-one thousand, three hundred twenty-four".