213451037 has 2 divisors, whose sum is σ = 213451038. Its totient is φ = 213451036.

The previous prime is 213451013. The next prime is 213451057. The reversal of 213451037 is 730154312.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 131928196 + 81522841 = 11486^2 + 9029^2 .

It is a cyclic number.

It is not a de Polignac number, because 213451037 - 2⁶ = 213450973 is a prime.

It is a super-2 number, since 2×213451037² = 91122690392750738, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 213450997 and 213451015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (213451057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 106725518 + 106725519.

It is an arithmetic number, because the mean of its divisors is an integer number (106725519).

Almost surely, 2^213451037 is an apocalyptic number.

It is an amenable number.

213451037 is a deficient number, since it is larger than the sum of its proper divisors (1).

213451037 is an equidigital number, since it uses as much as digits as its factorization.

213451037 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 213451037 is about 14609.9636207624. The cubic root of 213451037 is about 597.6305038724.

The spelling of 213451037 in words is "two hundred thirteen million, four hundred fifty-one thousand, thirty-seven".