31434111220 has 24 divisors (see below), whose sum is σ = 66307659264. Its totient is φ = 12517258656.

The previous prime is 31434111217. The next prime is 31434111227. The reversal of 31434111220 is 2211143413.

It is a junction number, because it is equal to n+sod(n) for n = 31434111191 and 31434111200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31434111227) 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, 3519544 + ... + 3528463.

It is an arithmetic number, because the mean of its divisors is an integer number (2762819136).

Almost surely, 2^31434111220 is an apocalyptic number.

It is an amenable number.

31434111220 is an abundant number, since it is smaller than the sum of its proper divisors (34873548044).

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

31434111220 is a wasteful number, since it uses less digits than its factorization.

31434111220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7048239 (or 7048237 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 22.

Adding to 31434111220 its reverse (2211143413), we get a palindrome (33645254633).

The spelling of 31434111220 in words is "thirty-one billion, four hundred thirty-four million, one hundred eleven thousand, two hundred twenty".