405311253 has 8 divisors (see below), whose sum is σ = 541500000. Its totient is φ = 269665008.

The previous prime is 405311237. The next prime is 405311261. The reversal of 405311253 is 352113504.

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

It is not a de Polignac number, because 405311253 - 2⁴ = 405311237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (405311233) 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, 133878 + ... + 136871.

It is an arithmetic number, because the mean of its divisors is an integer number (67687500).

Almost surely, 2^405311253 is an apocalyptic number.

It is an amenable number.

405311253 is a deficient number, since it is larger than the sum of its proper divisors (136188747).

405311253 is a wasteful number, since it uses less digits than its factorization.

405311253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271251.

The product of its (nonzero) digits is 1800, while the sum is 24.

The square root of 405311253 is about 20132.3434552463. The cubic root of 405311253 is about 740.0531085575.

Adding to 405311253 its reverse (352113504), we get a palindrome (757424757).

The spelling of 405311253 in words is "four hundred five million, three hundred eleven thousand, two hundred fifty-three".