1231155414 has 12 divisors (see below), whose sum is σ = 2667503436. Its totient is φ = 410385132.

The previous prime is 1231155347. The next prime is 1231155433. The reversal of 1231155414 is 4145511321.

1231155414 is a `hidden beast` number, since 1 + 2 + 3 + 115 + 541 + 4 = 666.

It is a super-2 number, since 2×1231155414² = 3031487306843022792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 34198744 + ... + 34198779.

It is an arithmetic number, because the mean of its divisors is an integer number (222291953).

Almost surely, 2^1231155414 is an apocalyptic number.

1231155414 is an abundant number, since it is smaller than the sum of its proper divisors (1436348022).

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

1231155414 is a wasteful number, since it uses less digits than its factorization.

1231155414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68397531 (or 68397528 counting only the distinct ones).

The product of its digits is 2400, while the sum is 27.

The square root of 1231155414 is about 35087.8242984657. The cubic root of 1231155414 is about 1071.7766547356.

Adding to 1231155414 its reverse (4145511321), we get a palindrome (5376666735).

The spelling of 1231155414 in words is "one billion, two hundred thirty-one million, one hundred fifty-five thousand, four hundred fourteen".