1229996131 has 16 divisors (see below), whose sum is σ = 1538665408. Its totient is φ = 957225600.

The previous prime is 1229996129. The next prime is 1229996149. The reversal of 1229996131 is 1316999221.

It is a cyclic number.

It is not a de Polignac number, because 1229996131 - 2¹ = 1229996129 is a prime.

It is a super-2 number, since 2×1229996131² = 3025780964549938322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1229996171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105240 + ... + 116341.

It is an arithmetic number, because the mean of its divisors is an integer number (96166588).

Almost surely, 2^1229996131 is an apocalyptic number.

1229996131 is a deficient number, since it is larger than the sum of its proper divisors (308669277).

1229996131 is a wasteful number, since it uses less digits than its factorization.

1229996131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 221662.

The product of its digits is 52488, while the sum is 43.

The square root of 1229996131 is about 35071.3006744831. The cubic root of 1229996131 is about 1071.4401462733.

The spelling of 1229996131 in words is "one billion, two hundred twenty-nine million, nine hundred ninety-six thousand, one hundred thirty-one".