31020123023230 has 128 divisors (see below), whose sum is σ = 63995791150080. Its totient is φ = 10715826908160.

The previous prime is 31020123023191. The next prime is 31020123023237. The reversal of 31020123023230 is 3232032102013.

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 (31020123023237) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 599176786 + ... + 599228554.

It is an arithmetic number, because the mean of its divisors is an integer number (499967118360).

Almost surely, 2^{31020123023230} is an apocalyptic number.

31020123023230 is an abundant number, since it is smaller than the sum of its proper divisors (32975668126850).

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

31020123023230 is a wasteful number, since it uses less digits than its factorization.

31020123023230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53426.

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

Adding to 31020123023230 its reverse (3232032102013), we get a palindrome (34252155125243).

The spelling of 31020123023230 in words is "thirty-one trillion, twenty billion, one hundred twenty-three million, twenty-three thousand, two hundred thirty".