162472731 has 4 divisors (see below), whose sum is σ = 216630312. Its totient is φ = 108315152.

The previous prime is 162472727. The next prime is 162472733. The reversal of 162472731 is 137274261.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 137274261 = 3 ⋅45758087.

It is a cyclic number.

It is not a de Polignac number, because 162472731 - 2² = 162472727 is a prime.

It is a super-2 number, since 2×162472731² = 52794776637196722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 162472692 and 162472701.

It is not an unprimeable number, because it can be changed into a prime (162472733) 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, 27078786 + ... + 27078791.

It is an arithmetic number, because the mean of its divisors is an integer number (54157578).

Almost surely, 2^162472731 is an apocalyptic number.

162472731 is a deficient number, since it is larger than the sum of its proper divisors (54157581).

162472731 is an equidigital number, since it uses as much as digits as its factorization.

162472731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54157580.

The product of its digits is 14112, while the sum is 33.

The square root of 162472731 is about 12746.4791609291. The cubic root of 162472731 is about 545.6659155229.

The spelling of 162472731 in words is "one hundred sixty-two million, four hundred seventy-two thousand, seven hundred thirty-one".