31220031230 has 8 divisors (see below), whose sum is σ = 56196056232. Its totient is φ = 12488012488.

The previous prime is 31220031181. The next prime is 31220031247. The reversal of 31220031230 is 3213002213.

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

It is a junction number, because it is equal to n+sod(n) for n = 31220031199 and 31220031208.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1561001552 + ... + 1561001571.

It is an arithmetic number, because the mean of its divisors is an integer number (7024507029).

Almost surely, 2^31220031230 is an apocalyptic number.

31220031230 is a deficient number, since it is larger than the sum of its proper divisors (24976025002).

31220031230 is a wasteful number, since it uses less digits than its factorization.

31220031230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3122003130.

The product of its (nonzero) digits is 216, while the sum is 17.

Adding to 31220031230 its reverse (3213002213), we get a palindrome (34433033443).

The spelling of 31220031230 in words is "thirty-one billion, two hundred twenty million, thirty-one thousand, two hundred thirty".