31441231431 has 20 divisors (see below), whose sum is σ = 46977851184. Its totient is φ = 20956320000.

The previous prime is 31441231399. The next prime is 31441231433. The reversal of 31441231431 is 13413214413.

31441231431 is a `hidden beast` number, since 314 + 4 + 1 + 2 + 314 + 31 = 666.

It is not a de Polignac number, because 31441231431 - 2⁵ = 31441231399 is a prime.

It is a super-2 number, since 2×31441231431² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 31441231395 and 31441231404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31441231433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 361831 + ... + 440231.

Almost surely, 2^31441231431 is an apocalyptic number.

31441231431 is a deficient number, since it is larger than the sum of its proper divisors (15536619753).

31441231431 is an equidigital number, since it uses as much as digits as its factorization.

31441231431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83364 (or 83355 counting only the distinct ones).

The product of its digits is 3456, while the sum is 27.

Adding to 31441231431 its reverse (13413214413), we get a palindrome (44854445844).

The spelling of 31441231431 in words is "thirty-one billion, four hundred forty-one million, two hundred thirty-one thousand, four hundred thirty-one".