340642031551 has 2 divisors, whose sum is σ = 340642031552. Its totient is φ = 340642031550.

The previous prime is 340642031501. The next prime is 340642031581. The reversal of 340642031551 is 155130246043.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 340642031551 - 2¹⁵ = 340641998783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (340642031501) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 170321015775 + 170321015776.

It is an arithmetic number, because the mean of its divisors is an integer number (170321015776).

Almost surely, 2^340642031551 is an apocalyptic number.

340642031551 is a deficient number, since it is larger than the sum of its proper divisors (1).

340642031551 is an equidigital number, since it uses as much as digits as its factorization.

340642031551 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 34.

Adding to 340642031551 its reverse (155130246043), we get a palindrome (495772277594).

The spelling of 340642031551 in words is "three hundred forty billion, six hundred forty-two million, thirty-one thousand, five hundred fifty-one".