31212421198 has 8 divisors (see below), whose sum is σ = 53507007792. Its totient is φ = 13376751936.

The previous prime is 31212421157. The next prime is 31212421199. The reversal of 31212421198 is 89112421213.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31212421199) 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, 1114729315 + ... + 1114729342.

It is an arithmetic number, because the mean of its divisors is an integer number (6688375974).

Almost surely, 2^31212421198 is an apocalyptic number.

31212421198 is a deficient number, since it is larger than the sum of its proper divisors (22294586594).

31212421198 is a wasteful number, since it uses less digits than its factorization.

31212421198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2229458666.

The product of its digits is 6912, while the sum is 34.

The spelling of 31212421198 in words is "thirty-one billion, two hundred twelve million, four hundred twenty-one thousand, one hundred ninety-eight".