31156414230 has 32 divisors (see below), whose sum is σ = 75615573600. Its totient is φ = 8215023872.

The previous prime is 31156414193. The next prime is 31156414231. The reversal of 31156414230 is 3241465113.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31156414231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5831865 + ... + 5837204.

It is an arithmetic number, because the mean of its divisors is an integer number (2362986675).

Almost surely, 2^31156414230 is an apocalyptic number.

31156414230 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

31156414230 is an abundant number, since it is smaller than the sum of its proper divisors (44459159370).

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

31156414230 is a wasteful number, since it uses less digits than its factorization.

31156414230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11669168.

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 31156414230 its reverse (3241465113), we get a palindrome (34397879343).

The spelling of 31156414230 in words is "thirty-one billion, one hundred fifty-six million, four hundred fourteen thousand, two hundred thirty".