31425140501 has 4 divisors (see below), whose sum is σ = 31433154912. Its totient is φ = 31417126092.

The previous prime is 31425140443. The next prime is 31425140507. The reversal of 31425140501 is 10504152413.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 31425140501 - 2¹⁰ = 31425139477 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 (31425140507) 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, 4001321 + ... + 4009166.

It is an arithmetic number, because the mean of its divisors is an integer number (7858288728).

Almost surely, 2^31425140501 is an apocalyptic number.

It is an amenable number.

31425140501 is a deficient number, since it is larger than the sum of its proper divisors (8014411).

31425140501 is an equidigital number, since it uses as much as digits as its factorization.

31425140501 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8014410.

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 31425140501 its reverse (10504152413), we get a palindrome (41929292914).

The spelling of 31425140501 in words is "thirty-one billion, four hundred twenty-five million, one hundred forty thousand, five hundred one".