1200344131 has 6 divisors (see below), whose sum is σ = 1396318740. Its totient is φ = 1028866356.

The previous prime is 1200344129. The next prime is 1200344137. The reversal of 1200344131 is 1314430021.

It is not a de Polignac number, because 1200344131 - 2¹ = 1200344129 is a prime.

It is a super-2 number, since 2×1200344131² = 2881652065652290322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1200344099 and 1200344108.

It is not an unprimeable number, because it can be changed into a prime (1200344137) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 12248361 + ... + 12248458.

It is an arithmetic number, because the mean of its divisors is an integer number (232719790).

Almost surely, 2^1200344131 is an apocalyptic number.

1200344131 is a deficient number, since it is larger than the sum of its proper divisors (195974609).

1200344131 is an equidigital number, since it uses as much as digits as its factorization.

1200344131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24496833 (or 24496826 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 1200344131 is about 34645.9828984545. The cubic root of 1200344131 is about 1062.7601410727.

Adding to 1200344131 its reverse (1314430021), we get a palindrome (2514774152).

It can be divided in two parts, 1200344 and 131, that added together give a triangular number (1200475 = T₁₅₄₉).

The spelling of 1200344131 in words is "one billion, two hundred million, three hundred forty-four thousand, one hundred thirty-one".