102031001131 has 4 divisors (see below), whose sum is σ = 103428686152. Its totient is φ = 100633316112.

The previous prime is 102031000937. The next prime is 102031001153. The reversal of 102031001131 is 131100130201.

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 102031001131 - 2²⁹ = 101494130219 is a prime.

It is a super-2 number, since 2×102031001131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (102031001231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 698842401 + ... + 698842546.

It is an arithmetic number, because the mean of its divisors is an integer number (25857171538).

Almost surely, 2^102031001131 is an apocalyptic number.

102031001131 is a deficient number, since it is larger than the sum of its proper divisors (1397685021).

102031001131 is an equidigital number, since it uses as much as digits as its factorization.

102031001131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1397685020.

The product of its (nonzero) digits is 18, while the sum is 13.

Adding to 102031001131 its reverse (131100130201), we get a palindrome (233131131332).

The spelling of 102031001131 in words is "one hundred two billion, thirty-one million, one thousand, one hundred thirty-one".