631350043 has 2 divisors, whose sum is σ = 631350044. Its totient is φ = 631350042.

The previous prime is 631349959. The next prime is 631350053. The reversal of 631350043 is 340053136.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 631350043 - 2⁹ = 631349531 is a prime.

It is a super-2 number, since 2×631350043² = 797205753592203698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (631350053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 315675021 + 315675022.

It is an arithmetic number, because the mean of its divisors is an integer number (315675022).

Almost surely, 2^631350043 is an apocalyptic number.

631350043 is a deficient number, since it is larger than the sum of its proper divisors (1).

631350043 is an equidigital number, since it uses as much as digits as its factorization.

631350043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3240, while the sum is 25.

The square root of 631350043 is about 25126.6799040383. The cubic root of 631350043 is about 857.8738007690.

The spelling of 631350043 in words is "six hundred thirty-one million, three hundred fifty thousand, forty-three".