997951351 has 2 divisors, whose sum is σ = 997951352. Its totient is φ = 997951350.

The previous prime is 997951337. The next prime is 997951373. The reversal of 997951351 is 153159799.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 997951351 - 2⁷ = 997951223 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 997951295 and 997951304.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (997955351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 498975675 + 498975676.

It is an arithmetic number, because the mean of its divisors is an integer number (498975676).

Almost surely, 2^997951351 is an apocalyptic number.

997951351 is a deficient number, since it is larger than the sum of its proper divisors (1).

997951351 is an equidigital number, since it uses as much as digits as its factorization.

997951351 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 382725, while the sum is 49.

The square root of 997951351 is about 31590.3680098855. The cubic root of 997951351 is about 999.3166501393.

The spelling of 997951351 in words is "nine hundred ninety-seven million, nine hundred fifty-one thousand, three hundred fifty-one".