147240731 has 16 divisors (see below), whose sum is σ = 168956928. Its totient is φ = 127077600.

The previous prime is 147240703. The next prime is 147240803. The reversal of 147240731 is 137042741.

147240731 = T₃₉₉ + T₄₀₀ + ... + T₉₈₁.

It is a cyclic number.

It is not a de Polignac number, because 147240731 - 2¹⁴ = 147224347 is a prime.

It is a super-2 number, since 2×147240731² = 43359665730828722, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 147240694 and 147240703.

It is not an unprimeable number, because it can be changed into a prime (147243731) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14000 + ... + 22146.

It is an arithmetic number, because the mean of its divisors is an integer number (10559808).

Almost surely, 2^147240731 is an apocalyptic number.

147240731 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

147240731 is a deficient number, since it is larger than the sum of its proper divisors (21716197).

147240731 is a wasteful number, since it uses less digits than its factorization.

147240731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8242.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 147240731 is about 12134.2791710097. The cubic root of 147240731 is about 528.0511445617.

The spelling of 147240731 in words is "one hundred forty-seven million, two hundred forty thousand, seven hundred thirty-one".