31302230130 has 48 divisors (see below), whose sum is σ = 81584881560. Its totient is φ = 8326842624.

The previous prime is 31302230083. The next prime is 31302230137. The reversal of 31302230130 is 3103220313.

31302230130 is a `hidden beast` number, since 3 + 1 + 302 + 230 + 130 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 30561682761 + 740547369 = 174819^2 + 27213^2 .

It is a super-2 number, since 2×31302230130² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (31302230137) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 388377 + ... + 461996.

Almost surely, 2^31302230130 is an apocalyptic number.

31302230130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31302230130 is an abundant number, since it is smaller than the sum of its proper divisors (50282651430).

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

31302230130 is a wasteful number, since it uses less digits than its factorization.

31302230130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 850795 (or 850792 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

Adding to 31302230130 its reverse (3103220313), we get a palindrome (34405450443).

The spelling of 31302230130 in words is "thirty-one billion, three hundred two million, two hundred thirty thousand, one hundred thirty".