31023121101 has 8 divisors (see below), whose sum is σ = 47273327424. Its totient is φ = 17727497760.

The previous prime is 31023121097. The next prime is 31023121141. The reversal of 31023121101 is 10112132013.

It is a happy number.

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

It is not a de Polignac number, because 31023121101 - 2² = 31023121097 is a prime.

It is a super-2 number, since 2×31023121101² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31023121141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 738645720 + ... + 738645761.

It is an arithmetic number, because the mean of its divisors is an integer number (5909165928).

Almost surely, 2^31023121101 is an apocalyptic number.

It is an amenable number.

31023121101 is a deficient number, since it is larger than the sum of its proper divisors (16250206323).

31023121101 is a wasteful number, since it uses less digits than its factorization.

31023121101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477291491.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 31023121101 its reverse (10112132013), we get a palindrome (41135253114).

The spelling of 31023121101 in words is "thirty-one billion, twenty-three million, one hundred twenty-one thousand, one hundred one".