31123322230 has 96 divisors (see below), whose sum is σ = 75631926528. Its totient is φ = 8954524800.

The previous prime is 31123322189. The next prime is 31123322239. The reversal of 31123322230 is 3222332113.

It is a super-2 number, since 2×31123322230² (a number of 22 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31123322239) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10545 + ... + 249715.

It is an arithmetic number, because the mean of its divisors is an integer number (787832568).

Almost surely, 2^31123322230 is an apocalyptic number.

31123322230 is an abundant number, since it is smaller than the sum of its proper divisors (44508604298).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31123322230 is a wasteful number, since it uses less digits than its factorization.

31123322230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239222 (or 239209 counting only the distinct ones).

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

Adding to 31123322230 its reverse (3222332113), we get a palindrome (34345654343).

It can be divided in two parts, 31123 and 322230, that added together give a palindrome (353353).

The spelling of 31123322230 in words is "thirty-one billion, one hundred twenty-three million, three hundred twenty-two thousand, two hundred thirty".