3950213531 has 4 divisors (see below), whose sum is σ = 4309323864. Its totient is φ = 3591103200.

The previous prime is 3950213521. The next prime is 3950213567. The reversal of 3950213531 is 1353120593.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3950213531 - 2⁶ = 3950213467 is a prime.

It is a super-2 number, since 2×3950213531² = 31208373880990975922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3950213521) 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, 179555150 + ... + 179555171.

It is an arithmetic number, because the mean of its divisors is an integer number (1077330966).

Almost surely, 2^3950213531 is an apocalyptic number.

3950213531 is a deficient number, since it is larger than the sum of its proper divisors (359110333).

3950213531 is a wasteful number, since it uses less digits than its factorization.

3950213531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 359110332.

The product of its (nonzero) digits is 12150, while the sum is 32.

The square root of 3950213531 is about 62850.7241883497. The cubic root of 3950213531 is about 1580.7876128463.

The spelling of 3950213531 in words is "three billion, nine hundred fifty million, two hundred thirteen thousand, five hundred thirty-one".