1423944731 has 16 divisors (see below), whose sum is σ = 1621555200. Its totient is φ = 1238635200.

The previous prime is 1423944707. The next prime is 1423944751. The reversal of 1423944731 is 1374493241.

It is not a de Polignac number, because 1423944731 - 2²⁶ = 1356835867 is a prime.

It is a super-2 number, since 2×1423944731² = 4055237193885324722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1423944751) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6890 + ... + 53808.

It is an arithmetic number, because the mean of its divisors is an integer number (101347200).

Almost surely, 2^1423944731 is an apocalyptic number.

1423944731 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1423944731 is a deficient number, since it is larger than the sum of its proper divisors (197610469).

1423944731 is a wasteful number, since it uses less digits than its factorization.

1423944731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47050.

The product of its digits is 72576, while the sum is 38.

The square root of 1423944731 is about 37735.1922083352. The cubic root of 1423944731 is about 1125.0307102069.

The spelling of 1423944731 in words is "one billion, four hundred twenty-three million, nine hundred forty-four thousand, seven hundred thirty-one".