1210423923 has 12 divisors (see below), whose sum is σ = 1804790208. Its totient is φ = 780918480.

The previous prime is 1210423913. The next prime is 1210423933. The reversal of 1210423923 is 3293240121.

It is a happy number.

1210423923 is a `hidden beast` number, since 1 + 210 + 423 + 9 + 23 = 666.

It is an interprime number because it is at equal distance from previous prime (1210423913) and next prime (1210423933).

It is not a de Polignac number, because 1210423923 - 2¹⁷ = 1210292851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1210423913) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2168940 + ... + 2169497.

It is an arithmetic number, because the mean of its divisors is an integer number (150399184).

Almost surely, 2^1210423923 is an apocalyptic number.

1210423923 is a deficient number, since it is larger than the sum of its proper divisors (594366285).

1210423923 is a wasteful number, since it uses less digits than its factorization.

1210423923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4338474 (or 4338471 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 1210423923 is about 34791.1471929283. The cubic root of 1210423923 is about 1065.7266666709.

It can be divided in two parts, 1210423 and 923, that added together give a triangular number (1211346 = T₁₅₅₆).

The spelling of 1210423923 in words is "one billion, two hundred ten million, four hundred twenty-three thousand, nine hundred twenty-three".