1013532631 has 4 divisors (see below), whose sum is σ = 1046227264. Its totient is φ = 980838000.

The previous prime is 1013532613. The next prime is 1013532643. The reversal of 1013532631 is 1362353101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1362353101 = 167 ⋅8157803.

It is a cyclic number.

It is not a de Polignac number, because 1013532631 - 2⁹ = 1013532119 is a prime.

It is a super-2 number, since 2×1013532631² = 2054496788203564322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1013532596 and 1013532605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013532431) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16347270 + ... + 16347331.

It is an arithmetic number, because the mean of its divisors is an integer number (261556816).

Almost surely, 2^1013532631 is an apocalyptic number.

1013532631 is a deficient number, since it is larger than the sum of its proper divisors (32694633).

1013532631 is an equidigital number, since it uses as much as digits as its factorization.

1013532631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32694632.

The product of its (nonzero) digits is 1620, while the sum is 25.

The square root of 1013532631 is about 31836.0272490146. The cubic root of 1013532631 is about 1004.4906806011.

Adding to 1013532631 its reverse (1362353101), we get a palindrome (2375885732).

The spelling of 1013532631 in words is "one billion, thirteen million, five hundred thirty-two thousand, six hundred thirty-one".