31200101242000 has 80 divisors (see below), whose sum is σ = 75542303625984. Its totient is φ = 12463422000000.

The previous prime is 31200101241937. The next prime is 31200101242021. The reversal of 31200101242000 is 24210100213.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×31200101242000² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (16).

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, 8884186 + ... + 11888185.

Almost surely, 2^{31200101242000} is an apocalyptic number.

It is an amenable number.

31200101242000 is an abundant number, since it is smaller than the sum of its proper divisors (44342202383984).

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

31200101242000 is a wasteful number, since it uses less digits than its factorization.

31200101242000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20773145 (or 20773129 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 16.

Adding to 31200101242000 its reverse (24210100213), we get a palindrome (31224311342213).

The spelling of 31200101242000 in words is "thirty-one trillion, two hundred billion, one hundred one million, two hundred forty-two thousand".