3145731 has 8 divisors (see below), whose sum is σ = 4441104. Its totient is φ = 1973760.

The previous prime is 3145721. The next prime is 3145739. The reversal of 3145731 is 1375413.

3145731 is nontrivially palindromic in base 2, base 4 and base 16.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3145731 - 2¹⁰ = 3144707 is a prime.

It is a super-2 number, since 2×3145731² = 19791247048722, which contains 22 as substring.

It is an Ulam number.

It is a zygodrome in base 2.

It is not an unprimeable number, because it can be changed into a prime (3145739) 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, 30790 + ... + 30891.

It is an arithmetic number, because the mean of its divisors is an integer number (555138).

Almost surely, 2^3145731 is an apocalyptic number.

3145731 is a deficient number, since it is larger than the sum of its proper divisors (1295373).

3145731 is a wasteful number, since it uses less digits than its factorization.

3145731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61701.

The product of its digits is 1260, while the sum is 24.

The square root of 3145731 is about 1773.6208726783. The cubic root of 3145731 is about 146.5234696254.

The spelling of 3145731 in words is "three million, one hundred forty-five thousand, seven hundred thirty-one".