1312231430 has 32 divisors (see below), whose sum is σ = 2422151424. Its totient is φ = 511582176.

The previous prime is 1312231373. The next prime is 1312231477. The reversal of 1312231430 is 341322131.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 213257 + ... + 219323.

It is an arithmetic number, because the mean of its divisors is an integer number (75692232).

Almost surely, 2^1312231430 is an apocalyptic number.

1312231430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1312231430 is a deficient number, since it is larger than the sum of its proper divisors (1109919994).

1312231430 is a wasteful number, since it uses less digits than its factorization.

1312231430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6620.

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 1312231430 is about 36224.7350576923. The cubic root of 1312231430 is about 1094.8051000392.

Adding to 1312231430 its reverse (341322131), we get a palindrome (1653553561).

The spelling of 1312231430 in words is "one billion, three hundred twelve million, two hundred thirty-one thousand, four hundred thirty".