1230555431 has 16 divisors (see below), whose sum is σ = 1437597504. Its totient is φ = 1031457024.

The previous prime is 1230555419. The next prime is 1230555497. The reversal of 1230555431 is 1345550321.

It is a cyclic number.

It is not a de Polignac number, because 1230555431 - 2⁶ = 1230555367 is a prime.

It is a super-2 number, since 2×1230555431² = 3028533337527191522, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1230555394 and 1230555403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230525431) 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, 110825 + ... + 121421.

It is an arithmetic number, because the mean of its divisors is an integer number (89849844).

Almost surely, 2^1230555431 is an apocalyptic number.

1230555431 is a deficient number, since it is larger than the sum of its proper divisors (207042073).

1230555431 is a wasteful number, since it uses less digits than its factorization.

1230555431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10970.

The product of its (nonzero) digits is 9000, while the sum is 29.

The square root of 1230555431 is about 35079.2735244047. The cubic root of 1230555431 is about 1071.6025223033.

The spelling of 1230555431 in words is "one billion, two hundred thirty million, five hundred fifty-five thousand, four hundred thirty-one".