31425436511 has 12 divisors (see below), whose sum is σ = 36996559992. Its totient is φ = 26611553808.

The previous prime is 31425436457. The next prime is 31425436541. The reversal of 31425436511 is 11563452413.

It is not a de Polignac number, because 31425436511 - 2⁶ = 31425436447 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31425436541) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3859400 + ... + 3867533.

It is an arithmetic number, because the mean of its divisors is an integer number (3083046666).

Almost surely, 2^31425436511 is an apocalyptic number.

31425436511 is a deficient number, since it is larger than the sum of its proper divisors (5571123481).

31425436511 is an equidigital number, since it uses as much as digits as its factorization.

31425436511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7727030 (or 7727023 counting only the distinct ones).

The product of its digits is 43200, while the sum is 35.

Adding to 31425436511 its reverse (11563452413), we get a palindrome (42988888924).

The spelling of 31425436511 in words is "thirty-one billion, four hundred twenty-five million, four hundred thirty-six thousand, five hundred eleven".