31143300121 has 16 divisors (see below), whose sum is σ = 34216934400. Its totient is φ = 28213807248.

The previous prime is 31143300107. The next prime is 31143300163. The reversal of 31143300121 is 12100334113.

It is a cyclic number.

It is not a de Polignac number, because 31143300121 - 2²¹ = 31141202969 is a prime.

It is a super-2 number, since 2×31143300121² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (31143300521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2203740 + ... + 2217826.

It is an arithmetic number, because the mean of its divisors is an integer number (2138558400).

Almost surely, 2^31143300121 is an apocalyptic number.

It is an amenable number.

31143300121 is a deficient number, since it is larger than the sum of its proper divisors (3073634279).

31143300121 is a wasteful number, since it uses less digits than its factorization.

31143300121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19188.

The product of its (nonzero) digits is 216, while the sum is 19.

Adding to 31143300121 its reverse (12100334113), we get a palindrome (43243634234).

The spelling of 31143300121 in words is "thirty-one billion, one hundred forty-three million, three hundred thousand, one hundred twenty-one".