31112123230 has 128 divisors (see below), whose sum is σ = 62544337920. Its totient is φ = 11090027520.

The previous prime is 31112123221. The next prime is 31112123239. The reversal of 31112123230 is 3232121113.

It is an interprime number because it is at equal distance from previous prime (31112123221) and next prime (31112123239).

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 31112123198 and 31112123207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31112123239) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 93994165 + ... + 93994495.

It is an arithmetic number, because the mean of its divisors is an integer number (488627640).

Almost surely, 2^31112123230 is an apocalyptic number.

31112123230 is an abundant number, since it is smaller than the sum of its proper divisors (31432214690).

31112123230 is a wasteful number, since it uses less digits than its factorization.

31112123230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 674.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31112123230 its reverse (3232121113), we get a palindrome (34344244343).

The spelling of 31112123230 in words is "thirty-one billion, one hundred twelve million, one hundred twenty-three thousand, two hundred thirty".