381048431 has 4 divisors (see below), whose sum is σ = 381422664. Its totient is φ = 380674200.

The previous prime is 381048407. The next prime is 381048449. The reversal of 381048431 is 134840183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 134840183 = 211 ⋅639053.

It is a cyclic number.

It is not a de Polignac number, because 381048431 - 2²⁶ = 313939567 is a prime.

It is a super-2 number, since 2×381048431² = 290395813535123522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381044431) 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, 185585 + ... + 187626.

It is an arithmetic number, because the mean of its divisors is an integer number (95355666).

Almost surely, 2^381048431 is an apocalyptic number.

381048431 is a deficient number, since it is larger than the sum of its proper divisors (374233).

381048431 is a wasteful number, since it uses less digits than its factorization.

381048431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374232.

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 381048431 is about 19520.4618541673. The cubic root of 381048431 is about 724.9811685953.

The spelling of 381048431 in words is "three hundred eighty-one million, forty-eight thousand, four hundred thirty-one".