1623734131 has 2 divisors, whose sum is σ = 1623734132. Its totient is φ = 1623734130.

The previous prime is 1623734113. The next prime is 1623734143. The reversal of 1623734131 is 1314373261.

Together with previous prime (1623734113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1623734131 - 2¹⁵ = 1623701363 is a prime.

It is a super-2 number, since 2×1623734131² = 5273025056348650322, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1623734093 and 1623734102.

It is not a weakly prime, because it can be changed into another prime (1623734171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 811867065 + 811867066.

It is an arithmetic number, because the mean of its divisors is an integer number (811867066).

Almost surely, 2^1623734131 is an apocalyptic number.

1623734131 is a deficient number, since it is larger than the sum of its proper divisors (1).

1623734131 is an equidigital number, since it uses as much as digits as its factorization.

1623734131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9072, while the sum is 31.

The square root of 1623734131 is about 40295.5845099683. The cubic root of 1623734131 is about 1175.3619843820.

The spelling of 1623734131 in words is "one billion, six hundred twenty-three million, seven hundred thirty-four thousand, one hundred thirty-one".