101020231131 has 4 divisors (see below), whose sum is σ = 134693641512. Its totient is φ = 67346820752.

The previous prime is 101020231127. The next prime is 101020231133. The reversal of 101020231131 is 131132020101.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 101020231131 - 2² = 101020231127 is a prime.

It is a super-2 number, since 2×101020231131² (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 101020231131.

It is not an unprimeable number, because it can be changed into a prime (101020231133) 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, 16836705186 + ... + 16836705191.

It is an arithmetic number, because the mean of its divisors is an integer number (33673410378).

Almost surely, 2^101020231131 is an apocalyptic number.

101020231131 is a deficient number, since it is larger than the sum of its proper divisors (33673410381).

101020231131 is an equidigital number, since it uses as much as digits as its factorization.

101020231131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33673410380.

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

Adding to 101020231131 its reverse (131132020101), we get a palindrome (232152251232).

The spelling of 101020231131 in words is "one hundred one billion, twenty million, two hundred thirty-one thousand, one hundred thirty-one".