31425134031 has 64 divisors (see below), whose sum is σ = 49201152000. Its totient is φ = 19794002400.

The previous prime is 31425134029. The next prime is 31425134047. The reversal of 31425134031 is 13043152413.

It is a happy number.

31425134031 is a `hidden beast` number, since 3 + 1 + 4 + 251 + 3 + 403 + 1 = 666.

It is not a de Polignac number, because 31425134031 - 2¹ = 31425134029 is a prime.

It is a super-2 number, since 2×31425134031² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 31425133986 and 31425134004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31425134431) 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, 22461870 + ... + 22463268.

It is an arithmetic number, because the mean of its divisors is an integer number (768768000).

Almost surely, 2^31425134031 is an apocalyptic number.

31425134031 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

31425134031 is a deficient number, since it is larger than the sum of its proper divisors (17776017969).

31425134031 is a wasteful number, since it uses less digits than its factorization.

31425134031 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2057 (or 2051 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 27.

Adding to 31425134031 its reverse (13043152413), we get a palindrome (44468286444).

The spelling of 31425134031 in words is "thirty-one billion, four hundred twenty-five million, one hundred thirty-four thousand, thirty-one".