31133102101 has 4 divisors (see below), whose sum is σ = 31137144172. Its totient is φ = 31129060032.

The previous prime is 31133102093. The next prime is 31133102153. The reversal of 31133102101 is 10120133113.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 10120133113 = 1063 ⋅9520351.

It can be written as a sum of positive squares in 2 ways, for example, as 9523808100 + 21609294001 = 97590^2 + 147001^2 .

It is a cyclic number.

It is not a de Polignac number, because 31133102101 - 2³ = 31133102093 is a prime.

It is a super-2 number, since 2×31133102101² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31133102171) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2009460 + ... + 2024893.

It is an arithmetic number, because the mean of its divisors is an integer number (7784286043).

Almost surely, 2^31133102101 is an apocalyptic number.

It is an amenable number.

31133102101 is a deficient number, since it is larger than the sum of its proper divisors (4042071).

31133102101 is an equidigital number, since it uses as much as digits as its factorization.

31133102101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4042070.

The product of its (nonzero) digits is 54, while the sum is 16.

Adding to 31133102101 its reverse (10120133113), we get a palindrome (41253235214).

The spelling of 31133102101 in words is "thirty-one billion, one hundred thirty-three million, one hundred two thousand, one hundred one".