31230400030 has 8 divisors (see below), whose sum is σ = 56214720072. Its totient is φ = 12492160008.

The previous prime is 31230400021. The next prime is 31230400037. The reversal of 31230400030 is 3000403213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 31230399977 and 31230400013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31230400037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1561519992 + ... + 1561520011.

It is an arithmetic number, because the mean of its divisors is an integer number (7026840009).

Almost surely, 2^31230400030 is an apocalyptic number.

31230400030 is a deficient number, since it is larger than the sum of its proper divisors (24984320042).

31230400030 is a wasteful number, since it uses less digits than its factorization.

31230400030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3123040010.

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 31230400030 its reverse (3000403213), we get a palindrome (34230803243).

The spelling of 31230400030 in words is "thirty-one billion, two hundred thirty million, four hundred thousand, thirty".