31453241221 has 8 divisors (see below), whose sum is σ = 32825131200. Its totient is φ = 30081714432.

The previous prime is 31453241201. The next prime is 31453241227. The reversal of 31453241221 is 12214235413.

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 31453241221 - 2⁵ = 31453241189 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31453241221.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31453241227) 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, 94230 + ... + 267928.

It is an arithmetic number, because the mean of its divisors is an integer number (4103141400).

Almost surely, 2^31453241221 is an apocalyptic number.

It is an amenable number.

31453241221 is a deficient number, since it is larger than the sum of its proper divisors (1371889979).

31453241221 is a wasteful number, since it uses less digits than its factorization.

31453241221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181595.

The product of its digits is 5760, while the sum is 28.

Adding to 31453241221 its reverse (12214235413), we get a palindrome (43667476634).

The spelling of 31453241221 in words is "thirty-one billion, four hundred fifty-three million, two hundred forty-one thousand, two hundred twenty-one".