312101998 has 32 divisors (see below), whose sum is σ = 520071552. Its totient is φ = 139557600.

The previous prime is 312101981. The next prime is 312102023. The reversal of 312101998 is 899101213.

312101998 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 145393 + ... + 147523.

It is an arithmetic number, because the mean of its divisors is an integer number (16252236).

Almost surely, 2^312101998 is an apocalyptic number.

312101998 is a deficient number, since it is larger than the sum of its proper divisors (207969554).

312101998 is a wasteful number, since it uses less digits than its factorization.

312101998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2320.

The product of its (nonzero) digits is 3888, while the sum is 34.

The square root of 312101998 is about 17666.4087465450. The cubic root of 312101998 is about 678.3161901196.

The spelling of 312101998 in words is "three hundred twelve million, one hundred one thousand, nine hundred ninety-eight".