31230400046 has 4 divisors (see below), whose sum is σ = 46845600072. Its totient is φ = 15615200022.

The previous prime is 31230400037. The next prime is 31230400049. The reversal of 31230400046 is 64000403213.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 31230399994 and 31230400030.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31230400049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7807600010 + ... + 7807600013.

It is an arithmetic number, because the mean of its divisors is an integer number (11711400018).

Almost surely, 2^31230400046 is an apocalyptic number.

31230400046 is a deficient number, since it is larger than the sum of its proper divisors (15615200026).

31230400046 is a wasteful number, since it uses less digits than its factorization.

31230400046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15615200025.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 31230400046 its reverse (64000403213), we get a palindrome (95230803259).

The spelling of 31230400046 in words is "thirty-one billion, two hundred thirty million, four hundred thousand, forty-six".