31404233104431 has 16 divisors (see below), whose sum is σ = 45686136585600. Its totient is φ = 19029846852320.

The previous prime is 31404233104381. The next prime is 31404233104463. The reversal of 31404233104431 is 13440133240413.

It is a cyclic number.

It is not a de Polignac number, because 31404233104431 - 2⁶ = 31404233104367 is a prime.

It is a super-2 number, since 2×31404233104431² (a number of 28 digits) contains 22 as substring.

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

It is a junction number, because it is equal to n+sod(n) for n = 31404233104392 and 31404233104401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31404233104831) 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, 75331380 + ... + 75747113.

It is an arithmetic number, because the mean of its divisors is an integer number (2855383536600).

Almost surely, 2^{31404233104431} is an apocalyptic number.

31404233104431 is a deficient number, since it is larger than the sum of its proper divisors (14281903481169).

31404233104431 is a wasteful number, since it uses less digits than its factorization.

31404233104431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151084806.

The product of its (nonzero) digits is 41472, while the sum is 33.

Adding to 31404233104431 its reverse (13440133240413), we get a palindrome (44844366344844).

The spelling of 31404233104431 in words is "thirty-one trillion, four hundred four billion, two hundred thirty-three million, one hundred four thousand, four hundred thirty-one".