1230555131 has 8 divisors (see below), whose sum is σ = 1382831520. Its totient is φ = 1086509952.

The previous prime is 1230555119. The next prime is 1230555169. The reversal of 1230555131 is 1315550321.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1230555131 - 2¹⁴ = 1230538747 is a prime.

It is a super-2 number, since 2×1230555131² = 3028531860860854322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1230555131.

It is not an unprimeable number, because it can be changed into a prime (1230555101) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2057486 + ... + 2058083.

It is an arithmetic number, because the mean of its divisors is an integer number (172853940).

Almost surely, 2^1230555131 is an apocalyptic number.

1230555131 is a deficient number, since it is larger than the sum of its proper divisors (152276389).

1230555131 is a wasteful number, since it uses less digits than its factorization.

1230555131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4115605.

The product of its (nonzero) digits is 2250, while the sum is 26.

The square root of 1230555131 is about 35079.2692483752. The cubic root of 1230555131 is about 1071.6024352204.

The spelling of 1230555131 in words is "one billion, two hundred thirty million, five hundred fifty-five thousand, one hundred thirty-one".