31023200131030 has 32 divisors (see below), whose sum is σ = 57266547343488. Its totient is φ = 12093325171200.

The previous prime is 31023200130997. The next prime is 31023200131039. The reversal of 31023200131030 is 3013100232013.

It is a junction number, because it is equal to n+sod(n) for n = 31023200130989 and 31023200131007.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31023200131039) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 41155767 + ... + 41902786.

It is an arithmetic number, because the mean of its divisors is an integer number (1789579604484).

Almost surely, 2^{31023200131030} is an apocalyptic number.

31023200131030 is a deficient number, since it is larger than the sum of its proper divisors (26243347212458).

31023200131030 is a wasteful number, since it uses less digits than its factorization.

31023200131030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83059512.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 31023200131030 its reverse (3013100232013), we get a palindrome (34036300363043).

The spelling of 31023200131030 in words is "thirty-one trillion, twenty-three billion, two hundred million, one hundred thirty-one thousand, thirty".