315720461 has 16 divisors (see below), whose sum is σ = 373263360. Its totient is φ = 261325440.

The previous prime is 315720443. The next prime is 315720467. The reversal of 315720461 is 164027513.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-315720461 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315720467) 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, 122195 + ... + 124751.

It is an arithmetic number, because the mean of its divisors is an integer number (23328960).

Almost surely, 2^315720461 is an apocalyptic number.

315720461 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

315720461 is a deficient number, since it is larger than the sum of its proper divisors (57542899).

315720461 is a wasteful number, since it uses less digits than its factorization.

315720461 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3164.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 315720461 is about 17768.5244463349. The cubic root of 315720461 is about 680.9275555572.

Adding to 315720461 its reverse (164027513), we get a palindrome (479747974).

The spelling of 315720461 in words is "three hundred fifteen million, seven hundred twenty thousand, four hundred sixty-one".