428903443131 has 16 divisors (see below), whose sum is σ = 584114333184. Its totient is φ = 279815666144.

The previous prime is 428903443127. The next prime is 428903443139. The reversal of 428903443131 is 131344309824.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 428903443131 - 2² = 428903443127 is a prime.

It is a super-2 number, since 2×428903443131² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (428903443139) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 918565 + ... + 1304441.

It is an arithmetic number, because the mean of its divisors is an integer number (36507145824).

Almost surely, 2^428903443131 is an apocalyptic number.

428903443131 is a deficient number, since it is larger than the sum of its proper divisors (155210890053).

428903443131 is a wasteful number, since it uses less digits than its factorization.

428903443131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 393810.

The product of its (nonzero) digits is 248832, while the sum is 42.

The spelling of 428903443131 in words is "four hundred twenty-eight billion, nine hundred three million, four hundred forty-three thousand, one hundred thirty-one".