31434130220 has 24 divisors (see below), whose sum is σ = 66035060784. Its totient is φ = 12569197376.

The previous prime is 31434130181. The next prime is 31434130229. The reversal of 31434130220 is 2203143413.

It is not an unprimeable number, because it can be changed into a prime (31434130229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 220262 + ... + 333741.

It is an arithmetic number, because the mean of its divisors is an integer number (2751460866).

Almost surely, 2^31434130220 is an apocalyptic number.

It is an amenable number.

31434130220 is an abundant number, since it is smaller than the sum of its proper divisors (34600930564).

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

31434130220 is a wasteful number, since it uses less digits than its factorization.

31434130220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 556849 (or 556847 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 31434130220 its reverse (2203143413), we get a palindrome (33637273633).

The spelling of 31434130220 in words is "thirty-one billion, four hundred thirty-four million, one hundred thirty thousand, two hundred twenty".