1231425355 has 16 divisors (see below), whose sum is σ = 1491654528. Its totient is φ = 975888000.

The previous prime is 1231425353. The next prime is 1231425389. The reversal of 1231425355 is 5535241321.

It is not a de Polignac number, because 1231425355 - 2¹ = 1231425353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1231425353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 242745 + ... + 247765.

It is an arithmetic number, because the mean of its divisors is an integer number (93228408).

Almost surely, 2^1231425355 is an apocalyptic number.

1231425355 is a deficient number, since it is larger than the sum of its proper divisors (260229173).

1231425355 is a wasteful number, since it uses less digits than its factorization.

1231425355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5478.

The product of its digits is 18000, while the sum is 31.

The square root of 1231425355 is about 35091.6707353754. The cubic root of 1231425355 is about 1071.8549809746.

Adding to 1231425355 its reverse (5535241321), we get a palindrome (6766666676).

The spelling of 1231425355 in words is "one billion, two hundred thirty-one million, four hundred twenty-five thousand, three hundred fifty-five".