1255431130 has 32 divisors (see below), whose sum is σ = 2413915344. Its totient is φ = 468443136.

The previous prime is 1255431109. The next prime is 1255431131. The reversal of 1255431130 is 311345521.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 595506409 + 659924721 = 24403^2 + 25689^2 .

It is a super-2 number, since 2×1255431130² = 3152214644346153800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1255431095 and 1255431104.

It is not an unprimeable number, because it can be changed into a prime (1255431131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13467 + ... + 51886.

Almost surely, 2^1255431130 is an apocalyptic number.

1255431130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1255431130 is a deficient number, since it is larger than the sum of its proper divisors (1158484214).

1255431130 is a wasteful number, since it uses less digits than its factorization.

1255431130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65490.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1255431130 is about 35432.0635865313. The cubic root of 1255431130 is about 1078.7752262254.

Adding to 1255431130 its reverse (311345521), we get a palindrome (1566776651).

The spelling of 1255431130 in words is "one billion, two hundred fifty-five million, four hundred thirty-one thousand, one hundred thirty".