31022121230 has 8 divisors (see below), whose sum is σ = 55839818232. Its totient is φ = 12408848488.

The previous prime is 31022121211. The next prime is 31022121239. The reversal of 31022121230 is 3212122013.

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 = 31022121199 and 31022121208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31022121239) 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, 1551106052 + ... + 1551106071.

It is an arithmetic number, because the mean of its divisors is an integer number (6979977279).

Almost surely, 2^31022121230 is an apocalyptic number.

31022121230 is a deficient number, since it is larger than the sum of its proper divisors (24817697002).

31022121230 is a wasteful number, since it uses less digits than its factorization.

31022121230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3102212130.

The product of its (nonzero) digits is 144, while the sum is 17.

Adding to 31022121230 its reverse (3212122013), we get a palindrome (34234243243).

The spelling of 31022121230 in words is "thirty-one billion, twenty-two million, one hundred twenty-one thousand, two hundred thirty".