395136431 has 8 divisors (see below), whose sum is σ = 406917984. Its totient is φ = 383412960.

The previous prime is 395136419. The next prime is 395136451. The reversal of 395136431 is 134631593.

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

It is a cyclic number.

It is not a de Polignac number, because 395136431 - 2¹⁰ = 395135407 is a prime.

It is a super-2 number, since 2×395136431² = 312265598206835522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 395136391 and 395136400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (395136451) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 515 + ... + 28116.

It is an arithmetic number, because the mean of its divisors is an integer number (50864748).

Almost surely, 2^395136431 is an apocalyptic number.

395136431 is a deficient number, since it is larger than the sum of its proper divisors (11781553).

395136431 is a wasteful number, since it uses less digits than its factorization.

395136431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29041.

The product of its digits is 29160, while the sum is 35.

The square root of 395136431 is about 19878.0389123273. The cubic root of 395136431 is about 733.8078571820.

The spelling of 395136431 in words is "three hundred ninety-five million, one hundred thirty-six thousand, four hundred thirty-one".