31441400323431 has 64 divisors (see below), whose sum is σ = 49099101757440. Its totient is φ = 17526728419200.

The previous prime is 31441400323429. The next prime is 31441400323477. The reversal of 31441400323431 is 13432300414413.

It is not a de Polignac number, because 31441400323431 - 2¹ = 31441400323429 is a prime.

It is a super-2 number, since 2×31441400323431² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31441400323392 and 31441400323401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31441400323481) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 77440006 + ... + 77844956.

It is an arithmetic number, because the mean of its divisors is an integer number (767173464960).

Almost surely, 2^{31441400323431} is an apocalyptic number.

31441400323431 is a deficient number, since it is larger than the sum of its proper divisors (17657701434009).

31441400323431 is a wasteful number, since it uses less digits than its factorization.

31441400323431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 405564.

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

Adding to 31441400323431 its reverse (13432300414413), we get a palindrome (44873700737844).

The spelling of 31441400323431 in words is "thirty-one trillion, four hundred forty-one billion, four hundred million, three hundred twenty-three thousand, four hundred thirty-one".