1097623831 has 2 divisors, whose sum is σ = 1097623832. Its totient is φ = 1097623830.

The previous prime is 1097623829. The next prime is 1097623859. The reversal of 1097623831 is 1383267901.

It is a weak prime.

It is an emirp because it is prime and its reverse (1383267901) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1097623831 - 2¹ = 1097623829 is a prime.

It is a super-2 number, since 2×1097623831² = 2409556148758233122, which contains 22 as substring.

Together with 1097623829, 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 (1097623801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 548811915 + 548811916.

It is an arithmetic number, because the mean of its divisors is an integer number (548811916).

Almost surely, 2^1097623831 is an apocalyptic number.

1097623831 is a deficient number, since it is larger than the sum of its proper divisors (1).

1097623831 is an equidigital number, since it uses as much as digits as its factorization.

1097623831 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 1097623831 is about 33130.4064418172. The cubic root of 1097623831 is about 1031.5362850546.

The spelling of 1097623831 in words is "one billion, ninety-seven million, six hundred twenty-three thousand, eight hundred thirty-one".