103211210131 has 4 divisors (see below), whose sum is σ = 103212606472. Its totient is φ = 103209813792.

The previous prime is 103211210129. The next prime is 103211210147. The reversal of 103211210131 is 131012112301.

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 103211210131 - 2¹ = 103211210129 is a prime.

It is a super-2 number, since 2×103211210131² (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 (103211210161) 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, 580710 + ... + 737323.

It is an arithmetic number, because the mean of its divisors is an integer number (25803151618).

Almost surely, 2^103211210131 is an apocalyptic number.

103211210131 is a deficient number, since it is larger than the sum of its proper divisors (1396341).

103211210131 is an equidigital number, since it uses as much as digits as its factorization.

103211210131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1396340.

The product of its (nonzero) digits is 36, while the sum is 16.

Adding to 103211210131 its reverse (131012112301), we get a palindrome (234223322432).

The spelling of 103211210131 in words is "one hundred three billion, two hundred eleven million, two hundred ten thousand, one hundred thirty-one".