31400144032312 has 32 divisors (see below), whose sum is σ = 64851135972480. Its totient is φ = 14134221934560.

The previous prime is 31400144032273. The next prime is 31400144032319. The reversal of 31400144032312 is 21323044100413.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31400144032319) 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 7 ways as a sum of consecutive naturals, for example, 1732125978 + ... + 1732144105.

It is an arithmetic number, because the mean of its divisors is an integer number (2026597999140).

Almost surely, 2^{31400144032312} is an apocalyptic number.

It is an amenable number.

31400144032312 is an abundant number, since it is smaller than the sum of its proper divisors (33450991940168).

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

31400144032312 is a wasteful number, since it uses less digits than its factorization.

31400144032312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3464270203 (or 3464270199 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 28.

Adding to 31400144032312 its reverse (21323044100413), we get a palindrome (52723188132725).

The spelling of 31400144032312 in words is "thirty-one trillion, four hundred billion, one hundred forty-four million, thirty-two thousand, three hundred twelve".