401106531 has 8 divisors (see below), whose sum is σ = 611209984. Its totient is φ = 229203720.

The previous prime is 401106527. The next prime is 401106539. The reversal of 401106531 is 135601104.

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

It is not a de Polignac number, because 401106531 - 2² = 401106527 is a prime.

It is a super-2 number, since 2×401106531² = 321772898421707922, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 19100311 = 401106531 / (4 + 0 + 1 + 1 + 0 + 6 + 5 + 3 + 1).

It is a junction number, because it is equal to n+sod(n) for n = 401106498 and 401106507.

It is not an unprimeable number, because it can be changed into a prime (401106539) 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, 9550135 + ... + 9550176.

It is an arithmetic number, because the mean of its divisors is an integer number (76401248).

Almost surely, 2^401106531 is an apocalyptic number.

401106531 is a deficient number, since it is larger than the sum of its proper divisors (210103453).

401106531 is a wasteful number, since it uses less digits than its factorization.

401106531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19100321.

The product of its (nonzero) digits is 360, while the sum is 21.

The square root of 401106531 is about 20027.6441699966. The cubic root of 401106531 is about 737.4850900366.

Adding to 401106531 its reverse (135601104), we get a palindrome (536707635).

The spelling of 401106531 in words is "four hundred one million, one hundred six thousand, five hundred thirty-one".