401769031 has 2 divisors, whose sum is σ = 401769032. Its totient is φ = 401769030.

The previous prime is 401769029. The next prime is 401769059. The reversal of 401769031 is 130967104.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 401769031 - 2¹ = 401769029 is a prime.

It is a super-2 number, since 2×401769031² = 322836708541357922, which contains 22 as substring.

Together with 401769029, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 401768984 and 401769002.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401769001) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200884515 + 200884516.

It is an arithmetic number, because the mean of its divisors is an integer number (200884516).

Almost surely, 2^401769031 is an apocalyptic number.

401769031 is a deficient number, since it is larger than the sum of its proper divisors (1).

401769031 is an equidigital number, since it uses as much as digits as its factorization.

401769031 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 401769031 is about 20044.1769848502. The cubic root of 401769031 is about 737.8908967123.

The spelling of 401769031 in words is "four hundred one million, seven hundred sixty-nine thousand, thirty-one".