3545221031 has 4 divisors (see below), whose sum is σ = 3867513864. Its totient is φ = 3222928200.

The previous prime is 3545221003. The next prime is 3545221033. The reversal of 3545221031 is 1301225453.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1301225453 = 11 ⋅118293223.

It is a cyclic number.

It is not a de Polignac number, because 3545221031 - 2¹⁸ = 3544958887 is a prime.

It is a super-2 number, since 2×3545221031² = 25137184317289405922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3545221033) 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, 161146400 + ... + 161146421.

It is an arithmetic number, because the mean of its divisors is an integer number (966878466).

Almost surely, 2^3545221031 is an apocalyptic number.

3545221031 is a deficient number, since it is larger than the sum of its proper divisors (322292833).

3545221031 is a wasteful number, since it uses less digits than its factorization.

3545221031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322292832.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 3545221031 is about 59541.7587160473. The cubic root of 3545221031 is about 1524.8054620251.

Adding to 3545221031 its reverse (1301225453), we get a palindrome (4846446484).

It can be divided in two parts, 354522 and 1031, that added together give a palindrome (355553).

The spelling of 3545221031 in words is "three billion, five hundred forty-five million, two hundred twenty-one thousand, thirty-one".