1931630023 has 4 divisors (see below), whose sum is σ = 1948724208. Its totient is φ = 1914535840.

The previous prime is 1931630021. The next prime is 1931630039. The reversal of 1931630023 is 3200361391.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1931630023 - 2¹ = 1931630021 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1931629973 and 1931630000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1931630021) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8546923 + ... + 8547148.

It is an arithmetic number, because the mean of its divisors is an integer number (487181052).

Almost surely, 2^1931630023 is an apocalyptic number.

1931630023 is a deficient number, since it is larger than the sum of its proper divisors (17094185).

1931630023 is a wasteful number, since it uses less digits than its factorization.

1931630023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17094184.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 1931630023 is about 43950.3131160632. The cubic root of 1931630023 is about 1245.3974791473.

The spelling of 1931630023 in words is "one billion, nine hundred thirty-one million, six hundred thirty thousand, twenty-three".