401402355431 has 16 divisors (see below), whose sum is σ = 506479212288. Its totient is φ = 309012604800.

The previous prime is 401402355413. The next prime is 401402355491. The reversal of 401402355431 is 134553204104.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-401402355431 is a prime.

It is a super-2 number, since 2×401402355431² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (401402355491) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31397330 + ... + 31410111.

It is an arithmetic number, because the mean of its divisors is an integer number (31654950768).

Almost surely, 2^401402355431 is an apocalyptic number.

401402355431 is a deficient number, since it is larger than the sum of its proper divisors (105076856857).

401402355431 is a wasteful number, since it uses less digits than its factorization.

401402355431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62807542.

The product of its (nonzero) digits is 28800, while the sum is 32.

Adding to 401402355431 its reverse (134553204104), we get a palindrome (535955559535).

The spelling of 401402355431 in words is "four hundred one billion, four hundred two million, three hundred fifty-five thousand, four hundred thirty-one".