31223140404423 has 16 divisors (see below), whose sum is σ = 46642922276736. Its totient is φ = 18411679844640.

The previous prime is 31223140404409. The next prime is 31223140404437. The reversal of 31223140404423 is 32440404132213.

It is an interprime number because it is at equal distance from previous prime (31223140404409) and next prime (31223140404437).

It is not a de Polignac number, because 31223140404423 - 2⁶ = 31223140404359 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31223140404493) 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, 12785887561 + ... + 12785890002.

It is an arithmetic number, because the mean of its divisors is an integer number (2915182642296).

Almost surely, 2^{31223140404423} is an apocalyptic number.

31223140404423 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

31223140404423 is a deficient number, since it is larger than the sum of its proper divisors (15419781872313).

31223140404423 is a wasteful number, since it uses less digits than its factorization.

31223140404423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25571777614.

The product of its (nonzero) digits is 55296, while the sum is 33.

Adding to 31223140404423 its reverse (32440404132213), we get a palindrome (63663544536636).

The spelling of 31223140404423 in words is "thirty-one trillion, two hundred twenty-three billion, one hundred forty million, four hundred four thousand, four hundred twenty-three".