31010404431 has 8 divisors (see below), whose sum is σ = 43523374720. Its totient is φ = 19585518552.

The previous prime is 31010404421. The next prime is 31010404441. The reversal of 31010404431 is 13440401013.

It is an interprime number because it is at equal distance from previous prime (31010404421) and next prime (31010404441).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 31010404431 - 2⁶ = 31010404367 is a prime.

It is a super-2 number, since 2×31010404431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 31010404398 and 31010404407.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31010404421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 272021035 + ... + 272021148.

It is an arithmetic number, because the mean of its divisors is an integer number (5440421840).

Almost surely, 2^31010404431 is an apocalyptic number.

31010404431 is a deficient number, since it is larger than the sum of its proper divisors (12512970289).

31010404431 is a wasteful number, since it uses less digits than its factorization.

31010404431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 544042205.

The product of its (nonzero) digits is 576, while the sum is 21.

Adding to 31010404431 its reverse (13440401013), we get a palindrome (44450805444).

The spelling of 31010404431 in words is "thirty-one billion, ten million, four hundred four thousand, four hundred thirty-one".