31421121224031 has 192 divisors, whose sum is σ = 58055961600000. Its totient is φ = 16233498731520.

The previous prime is 31421121224029. The next prime is 31421121224047. The reversal of 31421121224031 is 13042212112413.

31421121224031 is a `hidden beast` number, since 3 + 1 + 4 + 211 + 21 + 22 + 403 + 1 = 666.

It is not a de Polignac number, because 31421121224031 - 2¹ = 31421121224029 is a prime.

It is a super-2 number, since 2×31421121224031² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 31421121223986 and 31421121224004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31421121224531) by changing a digit.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 14758627975 + ... + 14758630103.

It is an arithmetic number, because the mean of its divisors is an integer number (302374800000).

Almost surely, 2^{31421121224031} is an apocalyptic number.

31421121224031 is a deficient number, since it is larger than the sum of its proper divisors (26634840375969).

31421121224031 is a wasteful number, since it uses less digits than its factorization.

31421121224031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4339 (or 4322 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

Adding to 31421121224031 its reverse (13042212112413), we get a palindrome (44463333336444).

The spelling of 31421121224031 in words is "thirty-one trillion, four hundred twenty-one billion, one hundred twenty-one million, two hundred twenty-four thousand, thirty-one".