31101140412 has 18 divisors (see below), whose sum is σ = 78616771688. Its totient is φ = 10367046792.

The previous prime is 31101140333. The next prime is 31101140419. The reversal of 31101140412 is 21404110113.

31101140412 is a `hidden beast` number, since 3 + 110 + 1 + 140 + 412 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31101140419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 431960248 + ... + 431960319.

Almost surely, 2^31101140412 is an apocalyptic number.

It is an amenable number.

31101140412 is an abundant number, since it is smaller than the sum of its proper divisors (47515631276).

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

31101140412 is a wasteful number, since it uses less digits than its factorization.

31101140412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863920577 (or 863920572 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

Adding to 31101140412 its reverse (21404110113), we get a palindrome (52505250525).

The spelling of 31101140412 in words is "thirty-one billion, one hundred one million, one hundred forty thousand, four hundred twelve".