31425422351 has 4 divisors (see below), whose sum is σ = 31425825000. Its totient is φ = 31425019704.

The previous prime is 31425422339. The next prime is 31425422377. The reversal of 31425422351 is 15322452413.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 31425422351 - 2³⁴ = 14245553167 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31425422551) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42476 + ... + 254273.

It is an arithmetic number, because the mean of its divisors is an integer number (7856456250).

Almost surely, 2^31425422351 is an apocalyptic number.

31425422351 is a deficient number, since it is larger than the sum of its proper divisors (402649).

31425422351 is a wasteful number, since it uses less digits than its factorization.

31425422351 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 402648.

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

Adding to 31425422351 its reverse (15322452413), we get a palindrome (46747874764).

The spelling of 31425422351 in words is "thirty-one billion, four hundred twenty-five million, four hundred twenty-two thousand, three hundred fifty-one".