3942656531 has 8 divisors (see below), whose sum is σ = 4308058224. Its totient is φ = 3578417920.

The previous prime is 3942656521. The next prime is 3942656561. The reversal of 3942656531 is 1356562493.

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

It is not a de Polignac number, because 3942656531 - 2⁶ = 3942656467 is a prime.

It is a super-2 number, since 2×3942656531² = 31089081042873907922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3942656521) 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, 283670 + ... + 297243.

It is an arithmetic number, because the mean of its divisors is an integer number (538507278).

Almost surely, 2^3942656531 is an apocalyptic number.

3942656531 is a deficient number, since it is larger than the sum of its proper divisors (365401693).

3942656531 is a wasteful number, since it uses less digits than its factorization.

3942656531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 581541.

The product of its digits is 583200, while the sum is 44.

The square root of 3942656531 is about 62790.5767691299. The cubic root of 3942656531 is about 1579.7789215591.

The spelling of 3942656531 in words is "three billion, nine hundred forty-two million, six hundred fifty-six thousand, five hundred thirty-one".