31110430420 has 24 divisors (see below), whose sum is σ = 65670419304. Its totient is φ = 12379693056.

The previous prime is 31110430399. The next prime is 31110430433. The reversal of 31110430420 is 2403401113.

It can be written as a sum of positive squares in 4 ways, for example, as 73856836 + 31036573584 = 8594^2 + 176172^2 .

It is a super-2 number, since 2×31110430420² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4025989 + ... + 4033708.

It is an arithmetic number, because the mean of its divisors is an integer number (2736267471).

Almost surely, 2^31110430420 is an apocalyptic number.

It is an amenable number.

31110430420 is an abundant number, since it is smaller than the sum of its proper divisors (34559988884).

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

31110430420 is a wasteful number, since it uses less digits than its factorization.

31110430420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8059899 (or 8059897 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

Adding to 31110430420 its reverse (2403401113), we get a palindrome (33513831533).

The spelling of 31110430420 in words is "thirty-one billion, one hundred ten million, four hundred thirty thousand, four hundred twenty".