1231284475 has 12 divisors (see below), whose sum is σ = 1534549104. Its totient is φ = 980023520.

The previous prime is 1231284437. The next prime is 1231284497. The reversal of 1231284475 is 5744821321.

It is a de Polignac number, because none of the positive numbers 2^k-1231284475 is a prime.

It is a super-2 number, since 2×1231284475² = 3032122916752051250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 120079 + ... + 129928.

It is an arithmetic number, because the mean of its divisors is an integer number (127879092).

Almost surely, 2^1231284475 is an apocalyptic number.

1231284475 is a deficient number, since it is larger than the sum of its proper divisors (303264629).

1231284475 is a wasteful number, since it uses less digits than its factorization.

1231284475 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250214 (or 250209 counting only the distinct ones).

The product of its digits is 53760, while the sum is 37.

The square root of 1231284475 is about 35089.6633640165. The cubic root of 1231284475 is about 1071.8141045794.

The spelling of 1231284475 in words is "one billion, two hundred thirty-one million, two hundred eighty-four thousand, four hundred seventy-five".