31523431141200 has 120 divisors (see below), whose sum is σ = 106294797714400. Its totient is φ = 7963814177280.

The previous prime is 31523431140983. The next prime is 31523431141207. The reversal of 31523431141200 is 214113432513.

It is a tau number, because it is divible by the number of its divisors (120).

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 (31523431141207) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 691280515 + ... + 691326114.

Almost surely, 2^{31523431141200} is an apocalyptic number.

31523431141200 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

31523431141200 is an abundant number, since it is smaller than the sum of its proper divisors (74771366573200).

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

31523431141200 is a wasteful number, since it uses less digits than its factorization.

31523431141200 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1382606669 (or 1382606658 counting only the distinct ones).

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

Adding to 31523431141200 its reverse (214113432513), we get a palindrome (31737544573713).

The spelling of 31523431141200 in words is "thirty-one trillion, five hundred twenty-three billion, four hundred thirty-one million, one hundred forty-one thousand, two hundred".