1623426031 has 2 divisors, whose sum is σ = 1623426032. Its totient is φ = 1623426030.

The previous prime is 1623425989. The next prime is 1623426109. The reversal of 1623426031 is 1306243261.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1623426031 - 2¹¹ = 1623423983 is a prime.

It is a super-2 number, since 2×1623426031² = 5271024156256825922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1623426331) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 811713015 + 811713016.

It is an arithmetic number, because the mean of its divisors is an integer number (811713016).

Almost surely, 2^1623426031 is an apocalyptic number.

1623426031 is a deficient number, since it is larger than the sum of its proper divisors (1).

1623426031 is an equidigital number, since it uses as much as digits as its factorization.

1623426031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 1623426031 is about 40291.7613290856. The cubic root of 1623426031 is about 1175.2876388909.

Adding to 1623426031 its reverse (1306243261), we get a palindrome (2929669292).

The spelling of 1623426031 in words is "one billion, six hundred twenty-three million, four hundred twenty-six thousand, thirty-one".