427381731 has 32 divisors (see below), whose sum is σ = 733824000. Its totient is φ = 240770880.

The previous prime is 427381727. The next prime is 427381733. The reversal of 427381731 is 137183724.

It is not a de Polignac number, because 427381731 - 2² = 427381727 is a prime.

It is a super-2 number, since 2×427381731² = 365310287985112722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (427381733) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 2506 + ... + 29343.

It is an arithmetic number, because the mean of its divisors is an integer number (22932000).

Almost surely, 2^427381731 is an apocalyptic number.

427381731 is a deficient number, since it is larger than the sum of its proper divisors (306442269).

427381731 is a wasteful number, since it uses less digits than its factorization.

427381731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31936 (or 31930 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 427381731 is about 20673.2128852774. The cubic root of 427381731 is about 753.2491516911.

The spelling of 427381731 in words is "four hundred twenty-seven million, three hundred eighty-one thousand, seven hundred thirty-one".