31240400046 has 32 divisors (see below), whose sum is σ = 65414079360. Its totient is φ = 9933239904.

The previous prime is 31240400027. The next prime is 31240400063. The reversal of 31240400046 is 64000404213.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31240399989 and 31240400025.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 1067140 + ... + 1096023.

It is an arithmetic number, because the mean of its divisors is an integer number (2044189980).

Almost surely, 2^31240400046 is an apocalyptic number.

31240400046 is an abundant number, since it is smaller than the sum of its proper divisors (34173679314).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31240400046 is a wasteful number, since it uses less digits than its factorization.

31240400046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2163280.

The product of its (nonzero) digits is 2304, while the sum is 24.

Adding to 31240400046 its reverse (64000404213), we get a palindrome (95240804259).

The spelling of 31240400046 in words is "thirty-one billion, two hundred forty million, four hundred thousand, forty-six".