201478931 has 8 divisors (see below), whose sum is σ = 204282624. Its totient is φ = 198684360.

The previous prime is 201478903. The next prime is 201478933. The reversal of 201478931 is 139874102.

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 201478931 - 2¹⁸ = 201216787 is a prime.

It is a super-2 number, since 2×201478931² = 81187519273805522, 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 = 201478891 and 201478900.

It is not an unprimeable number, because it can be changed into a prime (201478933) 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, 50450 + ... + 54296.

It is an arithmetic number, because the mean of its divisors is an integer number (25535328).

Almost surely, 2^201478931 is an apocalyptic number.

201478931 is a deficient number, since it is larger than the sum of its proper divisors (2803693).

201478931 is an equidigital number, since it uses as much as digits as its factorization.

201478931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4561.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 201478931 is about 14194.3274233054. The cubic root of 201478931 is about 586.2414825936.

The spelling of 201478931 in words is "two hundred one million, four hundred seventy-eight thousand, nine hundred thirty-one".