402031 has 8 divisors (see below), whose sum is σ = 465920. Its totient is φ = 339768.

The previous prime is 402029. The next prime is 402037. The reversal of 402031 is 130204.

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

It is a cyclic number.

It is not a de Polignac number, because 402031 - 2¹ = 402029 is a prime.

It is a super-2 number, since 2×402031² = 323257849922, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 401999 and 402017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402037) 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, 190 + ... + 916.

It is an arithmetic number, because the mean of its divisors is an integer number (58240).

2⁴⁰²⁰³¹ is an apocalyptic number.

402031 is a deficient number, since it is larger than the sum of its proper divisors (63889).

402031 is an equidigital number, since it uses as much as digits as its factorization.

402031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 813.

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 402031 is about 634.0591455062. The cubic root of 402031 is about 73.8051239701.

Adding to 402031 its reverse (130204), we get a palindrome (532235).

It can be divided in two parts, 40203 and 1, that added together give a palindrome (40204).

The spelling of 402031 in words is "four hundred two thousand, thirty-one".