31505223014130 has 256 divisors, whose sum is σ = 77488869169152. Its totient is φ = 8196556800000.

The previous prime is 31505223014107. The next prime is 31505223014131. The reversal of 31505223014130 is 3141032250513.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (31505223014131) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 52421335830 + ... + 52421336430.

It is an arithmetic number, because the mean of its divisors is an integer number (302690895192).

Almost surely, 2^{31505223014130} is an apocalyptic number.

31505223014130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31505223014130 is an abundant number, since it is smaller than the sum of its proper divisors (45983646155022).

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

31505223014130 is a wasteful number, since it uses less digits than its factorization.

31505223014130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1573.

The product of its (nonzero) digits is 10800, while the sum is 30.

Adding to 31505223014130 its reverse (3141032250513), we get a palindrome (34646255264643).

The spelling of 31505223014130 in words is "thirty-one trillion, five hundred five billion, two hundred twenty-three million, fourteen thousand, one hundred thirty".