102021031131 has 8 divisors (see below), whose sum is σ = 136126546704. Its totient is φ = 67964768160.

The previous prime is 102021031127. The next prime is 102021031213. The reversal of 102021031131 is 131130120201.

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 102021031131 - 2² = 102021031127 is a prime.

It is a super-2 number, since 2×102021031131² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 102021031131.

It is not an unprimeable number, because it can be changed into a prime (102021031111) 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, 12308316 + ... + 12316601.

It is an arithmetic number, because the mean of its divisors is an integer number (17015818338).

Almost surely, 2^102021031131 is an apocalyptic number.

102021031131 is a deficient number, since it is larger than the sum of its proper divisors (34105515573).

102021031131 is a wasteful number, since it uses less digits than its factorization.

102021031131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24626301.

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

Adding to 102021031131 its reverse (131130120201), we get a palindrome (233151151332).

The spelling of 102021031131 in words is "one hundred two billion, twenty-one million, thirty-one thousand, one hundred thirty-one".