31123032101 has 8 divisors (see below), whose sum is σ = 36152281344. Its totient is φ = 26239558320.

The previous prime is 31123032091. The next prime is 31123032139. The reversal of 31123032101 is 10123032113.

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 31123032101 - 2¹⁰ = 31123031077 is a prime.

It is a super-3 number, since 3×31123032101³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 31123032101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31123032151) 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, 36443405 + ... + 36444258.

It is an arithmetic number, because the mean of its divisors is an integer number (4519035168).

Almost surely, 2^31123032101 is an apocalyptic number.

It is an amenable number.

31123032101 is a deficient number, since it is larger than the sum of its proper divisors (5029249243).

31123032101 is an equidigital number, since it uses as much as digits as its factorization.

31123032101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72887731.

The product of its (nonzero) digits is 108, while the sum is 17.

Adding to 31123032101 its reverse (10123032113), we get a palindrome (41246064214).

The spelling of 31123032101 in words is "thirty-one billion, one hundred twenty-three million, thirty-two thousand, one hundred one".