1231342146 has 24 divisors (see below), whose sum is σ = 2759905980. Its totient is φ = 396293856.

The previous prime is 1231342127. The next prime is 1231342183. The reversal of 1231342146 is 6412431321.

It is a happy number.

1231342146 is a `hidden beast` number, since 1 + 231 + 3 + 421 + 4 + 6 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1103900625 + 127441521 = 33225^2 + 11289^2 .

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, 1178925 + ... + 1179968.

Almost surely, 2^1231342146 is an apocalyptic number.

1231342146 is an abundant number, since it is smaller than the sum of its proper divisors (1528563834).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231342146 is a wasteful number, since it uses less digits than its factorization.

1231342146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2358930 (or 2358927 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

The square root of 1231342146 is about 35090.4851206135. The cubic root of 1231342146 is about 1071.8308382228.

Adding to 1231342146 its reverse (6412431321), we get a palindrome (7643773467).

The spelling of 1231342146 in words is "one billion, two hundred thirty-one million, three hundred forty-two thousand, one hundred forty-six".