162723961 has 4 divisors (see below), whose sum is σ = 171288400. Its totient is φ = 154159524.

The previous prime is 162723941. The next prime is 162724013. The reversal of 162723961 is 169327261.

162723961 = T₁₀₄₁₄ + T₁₀₄₁₅ + T₁₀₄₁₆.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 169327261 = 71 ⋅2384891.

It is a cyclic number.

It is not a de Polignac number, because 162723961 - 2¹³ = 162715769 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 162723961.

It is not an unprimeable number, because it can be changed into a prime (162723941) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4282191 + ... + 4282228.

It is an arithmetic number, because the mean of its divisors is an integer number (42822100).

Almost surely, 2^162723961 is an apocalyptic number.

162723961 is the 10416-th centered triangular number.

It is an amenable number.

162723961 is a deficient number, since it is larger than the sum of its proper divisors (8564439).

162723961 is an equidigital number, since it uses as much as digits as its factorization.

162723961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8564438.

The product of its digits is 27216, while the sum is 37.

The square root of 162723961 is about 12756.3302324767. The cubic root of 162723961 is about 545.9470233098.

The spelling of 162723961 in words is "one hundred sixty-two million, seven hundred twenty-three thousand, nine hundred sixty-one".