31234441431 has 8 divisors (see below), whose sum is σ = 42267503104. Its totient is φ = 20512170360.

The previous prime is 31234441417. The next prime is 31234441493. The reversal of 31234441431 is 13414443213.

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

It is not a de Polignac number, because 31234441431 - 2²² = 31230247127 is a prime.

It is a super-2 number, since 2×31234441431² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31234441631) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77697415 + ... + 77697816.

It is an arithmetic number, because the mean of its divisors is an integer number (5283437888).

Almost surely, 2^31234441431 is an apocalyptic number.

31234441431 is a deficient number, since it is larger than the sum of its proper divisors (11033061673).

31234441431 is a wasteful number, since it uses less digits than its factorization.

31234441431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155395301.

The product of its digits is 13824, while the sum is 30.

Adding to 31234441431 its reverse (13414443213), we get a palindrome (44648884644).

The spelling of 31234441431 in words is "thirty-one billion, two hundred thirty-four million, four hundred forty-one thousand, four hundred thirty-one".