611562431 has 2 divisors, whose sum is σ = 611562432. Its totient is φ = 611562430.

The previous prime is 611562421. The next prime is 611562467. The reversal of 611562431 is 134265116.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 611562431 - 2¹⁰ = 611561407 is a prime.

It is a super-2 number, since 2×611562431² = 748017214021259522, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 611562394 and 611562403.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611562421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305781215 + 305781216.

It is an arithmetic number, because the mean of its divisors is an integer number (305781216).

Almost surely, 2^611562431 is an apocalyptic number.

611562431 is a deficient number, since it is larger than the sum of its proper divisors (1).

611562431 is an equidigital number, since it uses as much as digits as its factorization.

611562431 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 29.

The square root of 611562431 is about 24729.7883331014. The cubic root of 611562431 is about 848.8160823177.

The spelling of 611562431 in words is "six hundred eleven million, five hundred sixty-two thousand, four hundred thirty-one".