161703351 has 8 divisors (see below), whose sum is σ = 239560560. Its totient is φ = 107802216.

The previous prime is 161703341. The next prime is 161703379. The reversal of 161703351 is 153307161.

It is not a de Polignac number, because 161703351 - 2¹⁰ = 161702327 is a prime.

It is a super-2 number, since 2×161703351² = 52295947449258402, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 5989013 = 161703351 / (1 + 6 + 1 + 7 + 0 + 3 + 3 + 5 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161703301) 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, 2994480 + ... + 2994533.

It is an arithmetic number, because the mean of its divisors is an integer number (29945070).

Almost surely, 2^161703351 is an apocalyptic number.

161703351 is a deficient number, since it is larger than the sum of its proper divisors (77857209).

161703351 is an equidigital number, since it uses as much as digits as its factorization.

161703351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5989022 (or 5989016 counting only the distinct ones).

The product of its (nonzero) digits is 1890, while the sum is 27.

The square root of 161703351 is about 12716.2632482974. The cubic root of 161703351 is about 544.8032294730.

The spelling of 161703351 in words is "one hundred sixty-one million, seven hundred three thousand, three hundred fifty-one".