1226640152431 has 2 divisors, whose sum is σ = 1226640152432. Its totient is φ = 1226640152430.

The previous prime is 1226640152429. The next prime is 1226640152449. The reversal of 1226640152431 is 1342510466221.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1226640152431 - 2¹ = 1226640152429 is a prime.

It is a super-2 number, since 2×1226640152431² (a number of 25 digits) contains 22 as substring.

Together with 1226640152429, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1226640152531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 613320076215 + 613320076216.

It is an arithmetic number, because the mean of its divisors is an integer number (613320076216).

Almost surely, 2^{1226640152431} is an apocalyptic number.

1226640152431 is a deficient number, since it is larger than the sum of its proper divisors (1).

1226640152431 is an equidigital number, since it uses as much as digits as its factorization.

1226640152431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 37.

The spelling of 1226640152431 in words is "one trillion, two hundred twenty-six billion, six hundred forty million, one hundred fifty-two thousand, four hundred thirty-one".