1231430351355 has 12 divisors (see below), whose sum is σ = 2134479275760. Its totient is φ = 656762854032.

The previous prime is 1231430351309. The next prime is 1231430351363. The reversal of 1231430351355 is 5531530341321.

1231430351355 is a `hidden beast` number, since 1 + 2 + 314 + 303 + 5 + 1 + 35 + 5 = 666.

It is not a de Polignac number, because 1231430351355 - 2¹³ = 1231430343163 is a prime.

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, 13682559415 + ... + 13682559504.

It is an arithmetic number, because the mean of its divisors is an integer number (177873272980).

Almost surely, 2^{1231430351355} is an apocalyptic number.

1231430351355 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

1231430351355 is a deficient number, since it is larger than the sum of its proper divisors (903048924405).

1231430351355 is a wasteful number, since it uses less digits than its factorization.

1231430351355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27365118930 (or 27365118927 counting only the distinct ones).

The product of its (nonzero) digits is 81000, while the sum is 36.

Adding to 1231430351355 its reverse (5531530341321), we get a palindrome (6762960692676).

The spelling of 1231430351355 in words is "one trillion, two hundred thirty-one billion, four hundred thirty million, three hundred fifty-one thousand, three hundred fifty-five".