31113134430 has 32 divisors (see below), whose sum is σ = 85338883584. Its totient is φ = 7111573536.

The previous prime is 31113134419. The next prime is 31113134453. The reversal of 31113134430 is 3443131113.

It is a self number, because there is not a number n which added to its sum of digits gives 31113134430.

It is a congruent number.

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, 74078682 + ... + 74079101.

It is an arithmetic number, because the mean of its divisors is an integer number (2666840112).

Almost surely, 2^31113134430 is an apocalyptic number.

31113134430 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31113134430 is an abundant number, since it is smaller than the sum of its proper divisors (54225749154).

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

31113134430 is a wasteful number, since it uses less digits than its factorization.

31113134430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148157800.

The product of its (nonzero) digits is 1296, while the sum is 24.

Adding to 31113134430 its reverse (3443131113), we get a palindrome (34556265543).

The spelling of 31113134430 in words is "thirty-one billion, one hundred thirteen million, one hundred thirty-four thousand, four hundred thirty".