1203399131 has 16 divisors (see below), whose sum is σ = 1327518720. Its totient is φ = 1081775520.

The previous prime is 1203399103. The next prime is 1203399149. The reversal of 1203399131 is 1319933021.

It is a cyclic number.

It is not a de Polignac number, because 1203399131 - 2¹⁰ = 1203398107 is a prime.

It is a super-2 number, since 2×1203399131² = 2896338936983110322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1203399101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1034156 + ... + 1035318.

It is an arithmetic number, because the mean of its divisors is an integer number (82969920).

Almost surely, 2^1203399131 is an apocalyptic number.

1203399131 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1203399131 is a deficient number, since it is larger than the sum of its proper divisors (124119589).

1203399131 is a wasteful number, since it uses less digits than its factorization.

1203399131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2146.

The product of its (nonzero) digits is 4374, while the sum is 32.

The square root of 1203399131 is about 34690.0436869140. The cubic root of 1203399131 is about 1063.6609887580.

The spelling of 1203399131 in words is "one billion, two hundred three million, three hundred ninety-nine thousand, one hundred thirty-one".