31030801 has 2 divisors, whose sum is σ = 31030802. Its totient is φ = 31030800.

The previous prime is 31030793. The next prime is 31030807. The reversal of 31030801 is 10803013.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 26832400 + 4198401 = 5180^2 + 2049^2 .

It is a cyclic number.

It is not a de Polignac number, because 31030801 - 2³ = 31030793 is a prime.

It is a super-2 number, since 2×31030801² = 1925821221403202, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (31030807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15515400 + 15515401.

It is an arithmetic number, because the mean of its divisors is an integer number (15515401).

Almost surely, 2^31030801 is an apocalyptic number.

It is an amenable number.

31030801 is a deficient number, since it is larger than the sum of its proper divisors (1).

31030801 is an equidigital number, since it uses as much as digits as its factorization.

31030801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 31030801 is about 5570.5296875611. The cubic root of 31030801 is about 314.2420713011.

Adding to 31030801 its reverse (10803013), we get a palindrome (41833814).

The spelling of 31030801 in words is "thirty-one million, thirty thousand, eight hundred one".