31123223230 has 16 divisors (see below), whose sum is σ = 61114693104. Its totient is φ = 11317535680.

The previous prime is 31123223207. The next prime is 31123223249. The reversal of 31123223230 is 3232232113.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141469087 + ... + 141469306.

It is an arithmetic number, because the mean of its divisors is an integer number (3819668319).

Almost surely, 2^31123223230 is an apocalyptic number.

31123223230 is a deficient number, since it is larger than the sum of its proper divisors (29991469874).

31123223230 is a wasteful number, since it uses less digits than its factorization.

31123223230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 282938411.

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 31123223230 its reverse (3232232113), we get a palindrome (34355455343).

The spelling of 31123223230 in words is "thirty-one billion, one hundred twenty-three million, two hundred twenty-three thousand, two hundred thirty".