31224200434131 has 16 divisors (see below), whose sum is σ = 41700547587456. Its totient is φ = 20782021362816.

The previous prime is 31224200434129. The next prime is 31224200434153. The reversal of 31224200434131 is 13143400242213.

It is not a de Polignac number, because 31224200434131 - 2¹ = 31224200434129 is a prime.

It is a super-2 number, since 2×31224200434131² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31224200434181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 988731 + ... + 7964043.

It is an arithmetic number, because the mean of its divisors is an integer number (2606284224216).

Almost surely, 2^{31224200434131} is an apocalyptic number.

31224200434131 is a deficient number, since it is larger than the sum of its proper divisors (10476347153325).

31224200434131 is a wasteful number, since it uses less digits than its factorization.

31224200434131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6977762.

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

Adding to 31224200434131 its reverse (13143400242213), we get a palindrome (44367600676344).

The spelling of 31224200434131 in words is "thirty-one trillion, two hundred twenty-four billion, two hundred million, four hundred thirty-four thousand, one hundred thirty-one".