31453423321 has 8 divisors (see below), whose sum is σ = 31866982400. Its totient is φ = 31040249760.

The previous prime is 31453423303. The next prime is 31453423343. The reversal of 31453423321 is 12332435413.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 31453423321 - 2¹⁷ = 31453292249 is a prime.

It is a super-2 number, since 2×31453423321² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31453423361) 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, 69736 + ... + 260326.

It is an arithmetic number, because the mean of its divisors is an integer number (3983372800).

Almost surely, 2^31453423321 is an apocalyptic number.

It is an amenable number.

31453423321 is a deficient number, since it is larger than the sum of its proper divisors (413559079).

31453423321 is a wasteful number, since it uses less digits than its factorization.

31453423321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192759.

The product of its digits is 25920, while the sum is 31.

Adding to 31453423321 its reverse (12332435413), we get a palindrome (43785858734).

The spelling of 31453423321 in words is "thirty-one billion, four hundred fifty-three million, four hundred twenty-three thousand, three hundred twenty-one".