353123431 has 4 divisors (see below), whose sum is σ = 357091200. Its totient is φ = 349155664.

The previous prime is 353123413. The next prime is 353123461. The reversal of 353123431 is 134321353.

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 353123431 - 2²⁷ = 218905703 is a prime.

It is a super-2 number, since 2×353123431² = 249392315042423522, 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 = 353123396 and 353123405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (353123461) 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, 1983751 + ... + 1983928.

It is an arithmetic number, because the mean of its divisors is an integer number (89272800).

Almost surely, 2^353123431 is an apocalyptic number.

353123431 is a deficient number, since it is larger than the sum of its proper divisors (3967769).

353123431 is an equidigital number, since it uses as much as digits as its factorization.

353123431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3967768.

The product of its digits is 3240, while the sum is 25.

The square root of 353123431 is about 18791.5787255888. The cubic root of 353123431 is about 706.8200251840.

Adding to 353123431 its reverse (134321353), we get a palindrome (487444784).

It can be divided in two parts, 3531 and 23431, that added together give a palindrome (26962).

The spelling of 353123431 in words is "three hundred fifty-three million, one hundred twenty-three thousand, four hundred thirty-one".