1231340211430 has 48 divisors (see below), whose sum is σ = 2584096117200. Its totient is φ = 421220724288.

The previous prime is 1231340211427. The next prime is 1231340211443. The reversal of 1231340211430 is 341120431321.

It is a junction number, because it is equal to n+sod(n) for n = 1231340211395 and 1231340211404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2619205 + ... + 3053344.

It is an arithmetic number, because the mean of its divisors is an integer number (53835335775).

Almost surely, 2^{1231340211430} is an apocalyptic number.

1231340211430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1231340211430 is an abundant number, since it is smaller than the sum of its proper divisors (1352755905770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1231340211430 is a wasteful number, since it uses less digits than its factorization.

1231340211430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5673013 (or 5673006 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

Adding to 1231340211430 its reverse (341120431321), we get a palindrome (1572460642751).

The spelling of 1231340211430 in words is "one trillion, two hundred thirty-one billion, three hundred forty million, two hundred eleven thousand, four hundred thirty".