401532031 has 2 divisors, whose sum is σ = 401532032. Its totient is φ = 401532030.

The previous prime is 401532023. The next prime is 401532037. The reversal of 401532031 is 130235104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 401532031 - 2³ = 401532023 is a prime.

It is a super-2 number, since 2×401532031² = 322455943837969922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401532037) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200766015 + 200766016.

It is an arithmetic number, because the mean of its divisors is an integer number (200766016).

Almost surely, 2^401532031 is an apocalyptic number.

401532031 is a deficient number, since it is larger than the sum of its proper divisors (1).

401532031 is an equidigital number, since it uses as much as digits as its factorization.

401532031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 360, while the sum is 19.

The square root of 401532031 is about 20038.2641713298. The cubic root of 401532031 is about 737.7457764010.

Adding to 401532031 its reverse (130235104), we get a palindrome (531767135).

It can be divided in two parts, 4015 and 32031, that added together give a triangular number (36046 = T₂₆₈).

The spelling of 401532031 in words is "four hundred one million, five hundred thirty-two thousand, thirty-one".