31102011133 has 8 divisors (see below), whose sum is σ = 31188042360. Its totient is φ = 31016029440.

The previous prime is 31102011121. The next prime is 31102011137. The reversal of 31102011133 is 33111020113.

It can be written as a sum of positive squares in 4 ways, for example, as 8679344569 + 22422666564 = 93163^2 + 149742^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 31102011133 - 2²¹ = 31099913981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31102011137) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1493553 + ... + 1514233.

It is an arithmetic number, because the mean of its divisors is an integer number (3898505295).

Almost surely, 2^31102011133 is an apocalyptic number.

It is an amenable number.

31102011133 is a deficient number, since it is larger than the sum of its proper divisors (86031227).

31102011133 is a wasteful number, since it uses less digits than its factorization.

31102011133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24767.

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

Adding to 31102011133 its reverse (33111020113), we get a palindrome (64213031246).

The spelling of 31102011133 in words is "thirty-one billion, one hundred two million, eleven thousand, one hundred thirty-three".