31541423405 has 16 divisors (see below), whose sum is σ = 40335681024. Its totient is φ = 23622508800.

The previous prime is 31541423393. The next prime is 31541423429. The reversal of 31541423405 is 50432414513.

It is not a de Polignac number, because 31541423405 - 2⁶ = 31541423341 is a prime.

It is a super-2 number, since 2×31541423405² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2912396 + ... + 2923205.

It is an arithmetic number, because the mean of its divisors is an integer number (2520980064).

Almost surely, 2^31541423405 is an apocalyptic number.

It is an amenable number.

31541423405 is a deficient number, since it is larger than the sum of its proper divisors (8794257619).

31541423405 is a wasteful number, since it uses less digits than its factorization.

31541423405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5835676.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 31541423405 its reverse (50432414513), we get a palindrome (81973837918).

The spelling of 31541423405 in words is "thirty-one billion, five hundred forty-one million, four hundred twenty-three thousand, four hundred five".