1231103223131 has 8 divisors (see below), whose sum is σ = 1244473168224. Its totient is φ = 1217760537600.

The previous prime is 1231103223113. The next prime is 1231103223199. The reversal of 1231103223131 is 1313223011321.

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

It is a cyclic number.

It is not a de Polignac number, because 1231103223131 - 2²⁶ = 1231036114267 is a prime.

It is a super-2 number, since 2×1231103223131² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1231103223097 and 1231103223106.

It is not an unprimeable number, because it can be changed into a prime (1231103223331) 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, 6724070 + ... + 6904731.

It is an arithmetic number, because the mean of its divisors is an integer number (155559146028).

Almost surely, 2^{1231103223131} is an apocalyptic number.

1231103223131 is a deficient number, since it is larger than the sum of its proper divisors (13369945093).

1231103223131 is a wasteful number, since it uses less digits than its factorization.

1231103223131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13629781.

The product of its (nonzero) digits is 648, while the sum is 23.

Adding to 1231103223131 its reverse (1313223011321), we get a palindrome (2544326234452).

The spelling of 1231103223131 in words is "one trillion, two hundred thirty-one billion, one hundred three million, two hundred twenty-three thousand, one hundred thirty-one".