1243154431130 has 32 divisors (see below), whose sum is σ = 2261765114640. Its totient is φ = 491936739840.

The previous prime is 1243154431093. The next prime is 1243154431147. The reversal of 1243154431130 is 311344513421.

It can be written as a sum of positive squares in 8 ways, for example, as 457061179969 + 786093251161 = 676063^2 + 886619^2 .

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, 1369331 + ... + 2088390.

Almost surely, 2^{1243154431130} is an apocalyptic number.

1243154431130 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1243154431130 is a deficient number, since it is larger than the sum of its proper divisors (1018610683510).

1243154431130 is a wasteful number, since it uses less digits than its factorization.

1243154431130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3458114.

The product of its (nonzero) digits is 17280, while the sum is 32.

Adding to 1243154431130 its reverse (311344513421), we get a palindrome (1554498944551).

The spelling of 1243154431130 in words is "one trillion, two hundred forty-three billion, one hundred fifty-four million, four hundred thirty-one thousand, one hundred thirty".