997951310 has 32 divisors (see below), whose sum is σ = 1872810720. Its totient is φ = 382531968.

The previous prime is 997951291. The next prime is 997951327. The reversal of 997951310 is 13159799.

It is a super-2 number, since 2×997951310² = 1991813634261432200, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 896 + ... + 44684.

It is an arithmetic number, because the mean of its divisors is an integer number (58525335).

Almost surely, 2^997951310 is an apocalyptic number.

997951310 is a deficient number, since it is larger than the sum of its proper divisors (874859410).

997951310 is a wasteful number, since it uses less digits than its factorization.

997951310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43892.

The product of its (nonzero) digits is 76545, while the sum is 44.

The square root of 997951310 is about 31590.3673609536. The cubic root of 997951310 is about 999.3166364540.

The spelling of 997951310 in words is "nine hundred ninety-seven million, nine hundred fifty-one thousand, three hundred ten".