31030113230220 has 48 divisors (see below), whose sum is σ = 93567726050400. Its totient is φ = 7638181718016.

The previous prime is 31030113230209. The next prime is 31030113230269. The reversal of 31030113230220 is 2203231103013.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19891097445 + ... + 19891099004.

It is an arithmetic number, because the mean of its divisors is an integer number (1949327626050).

Almost surely, 2^{31030113230220} is an apocalyptic number.

31030113230220 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31030113230220 is an abundant number, since it is smaller than the sum of its proper divisors (62537612820180).

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

31030113230220 is a wasteful number, since it uses less digits than its factorization.

31030113230220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39782196474 (or 39782196472 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 31030113230220 its reverse (2203231103013), we get a palindrome (33233344333233).

The spelling of 31030113230220 in words is "thirty-one trillion, thirty billion, one hundred thirteen million, two hundred thirty thousand, two hundred twenty".