403134230021 has 4 divisors (see below), whose sum is σ = 411711554112. Its totient is φ = 394556905932.

The previous prime is 403134230003. The next prime is 403134230027. The reversal of 403134230021 is 120032431304.

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 a de Polignac number, because none of the positive numbers 2^k-403134230021 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 (403134230027) 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, 4288661975 + ... + 4288662068.

It is an arithmetic number, because the mean of its divisors is an integer number (102927888528).

Almost surely, 2^403134230021 is an apocalyptic number.

It is an amenable number.

403134230021 is a deficient number, since it is larger than the sum of its proper divisors (8577324091).

403134230021 is an equidigital number, since it uses as much as digits as its factorization.

403134230021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8577324090.

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

Adding to 403134230021 its reverse (120032431304), we get a palindrome (523166661325).

The spelling of 403134230021 in words is "four hundred three billion, one hundred thirty-four million, two hundred thirty thousand, twenty-one".