31144121011101 has 12 divisors (see below), whose sum is σ = 48305167282752. Its totient is φ = 17796640577688.

The previous prime is 31144121011051. The next prime is 31144121011103. The reversal of 31144121011101 is 10111012144113.

It is not a de Polignac number, because 31144121011101 - 2²² = 31144116816797 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31144121011103) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 105932384245 + ... + 105932384538.

It is an arithmetic number, because the mean of its divisors is an integer number (4025430606896).

Almost surely, 2^{31144121011101} is an apocalyptic number.

It is an amenable number.

31144121011101 is a deficient number, since it is larger than the sum of its proper divisors (17161046271651).

31144121011101 is a wasteful number, since it uses less digits than its factorization.

31144121011101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211864768800 (or 211864768793 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 21.

Adding to 31144121011101 its reverse (10111012144113), we get a palindrome (41255133155214).

The spelling of 31144121011101 in words is "thirty-one trillion, one hundred forty-four billion, one hundred twenty-one million, eleven thousand, one hundred one".